I guess, i found out, where the error came from. After the scan has finished, following screen can be seen:
http://abload.de/image.php?img=2017-08-01_123851thsvf.png
Nevertheless, the findings of the "PUP.Adware.Heuristic" in the folder "C:\ProgramData\Audyssee Labs" you cannot find in the protocol file!
# AdwCleaner 7.0.1.0 - Logfile created on Tue Aug 01 10:37:27 2017
# Updated on 2017/05/08 by Malwarebytes
# Database: 07-29-2017.2
# Running on Windows 8.1 (X64)
# Mode: scan
# Support: https://www.malwarebytes.com/support
***** [ Services ] *****
PUP.Adware.Heuristic, syncagentsrv
***** [ Folders ] *****
PUP.Adware.Heuristic, C:\ProgramData\Audyssey Labs
***** [ Files ] *****
No malicious files found.
***** [ DLL ] *****
No malicious DLLs found.
***** [ WMI ] *****
No malicious WMI found.
***** [ Shortcuts ] *****
No malicious shortcuts found.
***** [ Tasks ] *****
No malicious tasks found.
***** [ Registry ] *****
PUP.Optional.Legacy, [Key] - HKLM\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{9522B3FB-7A2B-4646-8AF6-36E7F593073C}
***** [ Firefox (and derivatives) ] *****
SearchProvider found: nortonsafe.search.ask.com - Norton Safe Search
SearchProvider found: nortonsafe.search.ask.com - Norton Safe Search
***** [ Chromium (and derivatives) ] *****
No malicious Chromium entries.
*************************
C:/AdwCleaner/AdwCleaner[C10].txt - [1068 B] - [2015/11/13 8:46:45]
C:/AdwCleaner/AdwCleaner[C11].txt - [1077 B] - [2015/12/1 10:46:31]
C:/AdwCleaner/AdwCleaner[C12].txt - [1077 B] - [2015/12/2 9:32:47]
C:/AdwCleaner/AdwCleaner[C13].txt - [1154 B] - [2015/12/8 10:2:39]
C:/AdwCleaner/AdwCleaner[C14].txt - [1101 B] - [2016/1/5 8:19:3]
C:/AdwCleaner/AdwCleaner[C15].txt - [8801 B] - [2016/8/13 10:31:5]
C:/AdwCleaner/AdwCleaner[C16].txt - [7037 B] - [2016/9/5 7:48:50]
C:/AdwCleaner/AdwCleaner[C17].txt - [7597 B] - [2016/9/15 9:16:18]
C:/AdwCleaner/AdwCleaner[C18].txt - [8252 B] - [2016/9/28 10:24:30]
C:/AdwCleaner/AdwCleaner[C19].txt - [9746 B] - [2016/12/19 15:22:50]
C:/AdwCleaner/AdwCleaner[C1].txt - [11195 B] - [2015/8/28 7:49:42]
C:/AdwCleaner/AdwCleaner[C20].txt - [10407 B] - [2017/1/2 7:8:7]
C:/AdwCleaner/AdwCleaner[C21].txt - [11089 B] - [2017/5/12 8:52:4]
C:/AdwCleaner/AdwCleaner[C22].txt - [11163 B] - [2017/6/16 13:6:35]
C:/AdwCleaner/AdwCleaner[C2].txt - [8014 B] - [2015/9/10 4:56:31]
C:/AdwCleaner/AdwCleaner[C3].txt - [6426 B] - [2015/9/24 14:35:14]
C:/AdwCleaner/AdwCleaner[C4].txt - [6462 B] - [2015/9/28 7:22:34]
C:/AdwCleaner/AdwCleaner[C5].txt - [6013 B] - [2015/10/5 12:23:23]
C:/AdwCleaner/AdwCleaner[C6].txt - [6414 B] - [2015/10/8 15:6:2]
C:/AdwCleaner/AdwCleaner[C7].txt - [6801 B] - [2015/10/29 12:59:1]
C:/AdwCleaner/AdwCleaner[C8].txt - [24213 B] - [2015/11/2 12:22:39]
C:/AdwCleaner/AdwCleaner[C9].txt - [2305 B] - [2015/11/5 10:50:28]
C:/AdwCleaner/AdwCleaner[S100].txt - [10133 B] - [2017/1/7 12:52:54]
C:/AdwCleaner/AdwCleaner[S101].txt - [10209 B] - [2017/3/30 13:11:39]
C:/AdwCleaner/AdwCleaner[S102].txt - [10285 B] - [2017/3/31 7:39:19]
C:/AdwCleaner/AdwCleaner[S103].txt - [10361 B] - [2017/4/4 13:55:51]
C:/AdwCleaner/AdwCleaner[S104].txt - [10437 B] - [2017/4/7 15:54:23]
C:/AdwCleaner/AdwCleaner[S105].txt - [10513 B] - [2017/4/12 13:27:24]
C:/AdwCleaner/AdwCleaner[S106].txt - [10589 B] - [2017/4/18 12:32:50]
C:/AdwCleaner/AdwCleaner[S107].txt - [10665 B] - [2017/4/19 11:0:7]
C:/AdwCleaner/AdwCleaner[S108].txt - [10741 B] - [2017/4/25 5:58:12]
C:/AdwCleaner/AdwCleaner[S109].txt - [10817 B] - [2017/4/27 10:17:12]
C:/AdwCleaner/AdwCleaner[S10].txt - [6048 B] - [2015/10/12 7:49:22]
C:/AdwCleaner/AdwCleaner[S110].txt - [10893 B] - [2017/4/29 10:56:41]
C:/AdwCleaner/AdwCleaner[S111].txt - [10969 B] - [2017/5/11 11:26:57]
C:/AdwCleaner/AdwCleaner[S112].txt - [11224 B] - [2017/5/12 8:51:47]
C:/AdwCleaner/AdwCleaner[S113].txt - [11195 B] - [2017/5/15 11:28:55]
C:/AdwCleaner/AdwCleaner[S114].txt - [11272 B] - [2017/5/17 7:32:27]
C:/AdwCleaner/AdwCleaner[S115].txt - [11348 B] - [2017/5/20 9:43:59]
C:/AdwCleaner/AdwCleaner[S116].txt - [11423 B] - [2017/5/22 9:2:0]
C:/AdwCleaner/AdwCleaner[S117].txt - [11500 B] - [2017/5/26 13:11:10]
C:/AdwCleaner/AdwCleaner[S118].txt - [11604 B] - [2017/6/16 13:4:6]
C:/AdwCleaner/AdwCleaner[S119].txt - [11679 B] - [2017/6/16 13:5:54]
C:/AdwCleaner/AdwCleaner[S11].txt - [6048 B] - [2015/10/21 10:32:40]
C:/AdwCleaner/AdwCleaner[S120].txt - [11802 B] - [2017/6/16 13:17:10]
C:/AdwCleaner/AdwCleaner[S121].txt - [11879 B] - [2017/6/17 9:42:3]
C:/AdwCleaner/AdwCleaner[S122].txt - [11955 B] - [2017/6/20 7:7:37]
C:/AdwCleaner/AdwCleaner[S123].txt - [12031 B] - [2017/6/22 10:17:58]
C:/AdwCleaner/AdwCleaner[S124].txt - [12107 B] - [2017/6/27 10:36:3]
C:/AdwCleaner/AdwCleaner[S125].txt - [11218 B] - [2017/7/13 9:37:9]
C:/AdwCleaner/AdwCleaner[S12].txt - [5609 B] - [2015/10/25 16:39:33]
C:/AdwCleaner/AdwCleaner[S13].txt - [5408 B] - [2015/10/29 12:57:50]
C:/AdwCleaner/AdwCleaner[S14].txt - [27775 B] - [2015/11/2 12:21:41]
C:/AdwCleaner/AdwCleaner[S15].txt - [6549 B] - [2015/11/5 10:49:42]
C:/AdwCleaner/AdwCleaner[S16].txt - [27679 B] - [2015/11/6 8:24:44]
C:/AdwCleaner/AdwCleaner[S17].txt - [5302 B] - [2015/11/9 6:48:24]
C:/AdwCleaner/AdwCleaner[S18].txt - [5368 B] - [2015/11/13 8:46:0]
C:/AdwCleaner/AdwCleaner[S19].txt - [5403 B] - [2015/11/13 13:28:37]
C:/AdwCleaner/AdwCleaner[S1].txt - [7064 B] - [2015/8/28 7:47:42]
C:/AdwCleaner/AdwCleaner[S20].txt - [5334 B] - [2015/11/16 8:27:26]
C:/AdwCleaner/AdwCleaner[S21].txt - [5335 B] - [2015/11/18 9:19:39]
C:/AdwCleaner/AdwCleaner[S22].txt - [5336 B] - [2015/11/20 11:7:1]
C:/AdwCleaner/AdwCleaner[S23].txt - [5337 B] - [2015/11/25 12:30:52]
C:/AdwCleaner/AdwCleaner[S24].txt - [5379 B] - [2015/12/1 10:45:36]
C:/AdwCleaner/AdwCleaner[S25].txt - [5380 B] - [2015/12/2 9:32:8]
C:/AdwCleaner/AdwCleaner[S26].txt - [5451 B] - [2015/12/8 10:0:33]
C:/AdwCleaner/AdwCleaner[S27].txt - [5451 B] - [2015/12/8 10:2:1]
C:/AdwCleaner/AdwCleaner[S28].txt - [5340 B] - [2015/12/10 6:36:31]
C:/AdwCleaner/AdwCleaner[S29].txt - [5951 B] - [2015/12/18 9:7:3]
C:/AdwCleaner/AdwCleaner[S2].txt - [6215 B] - [2015/9/2 6:19:32]
C:/AdwCleaner/AdwCleaner[S30].txt - [5214 B] - [2015/12/22 8:23:33]
C:/AdwCleaner/AdwCleaner[S31].txt - [5215 B] - [2015/12/30 9:36:10]
C:/AdwCleaner/AdwCleaner[S32].txt - [5414 B] - [2016/1/5 8:16:32]
C:/AdwCleaner/AdwCleaner[S33].txt - [5217 B] - [2016/1/18 5:50:43]
C:/AdwCleaner/AdwCleaner[S34].txt - [5218 B] - [2016/1/21 9:13:35]
C:/AdwCleaner/AdwCleaner[S35].txt - [5217 B] - [2016/1/26 10:33:13]
C:/AdwCleaner/AdwCleaner[S36].txt - [5218 B] - [2016/1/29 10:50:14]
C:/AdwCleaner/AdwCleaner[S37].txt - [4508 B] - [2016/6/7 9:18:48]
C:/AdwCleaner/AdwCleaner[S38].txt - [4582 B] - [2016/6/8 12:9:6]
C:/AdwCleaner/AdwCleaner[S39].txt - [4659 B] - [2016/6/19 7:1:48]
C:/AdwCleaner/AdwCleaner[S3].txt - [8608 B] - [2015/9/10 4:55:20]
C:/AdwCleaner/AdwCleaner[S40].txt - [4733 B] - [2016/6/20 11:16:23]
C:/AdwCleaner/AdwCleaner[S41].txt - [4807 B] - [2016/6/21 9:50:9]
C:/AdwCleaner/AdwCleaner[S42].txt - [4881 B] - [2016/6/23 8:45:53]
C:/AdwCleaner/AdwCleaner[S43].txt - [4955 B] - [2016/6/24 11:13:51]
C:/AdwCleaner/AdwCleaner[S44].txt - [5029 B] - [2016/6/25 9:23:40]
C:/AdwCleaner/AdwCleaner[S45].txt - [5103 B] - [2016/6/28 9:14:33]
C:/AdwCleaner/AdwCleaner[S46].txt - [5177 B] - [2016/6/29 9:20:46]
C:/AdwCleaner/AdwCleaner[S47].txt - [5251 B] - [2016/7/1 6:46:44]
C:/AdwCleaner/AdwCleaner[S48].txt - [5325 B] - [2016/7/6 5:25:0]
C:/AdwCleaner/AdwCleaner[S49].txt - [5591 B] - [2016/7/7 8:6:51]
C:/AdwCleaner/AdwCleaner[S4].txt - [6769 B] - [2015/9/10 5:2:26]
C:/AdwCleaner/AdwCleaner[S50].txt - [5473 B] - [2016/7/7 8:15:1]
C:/AdwCleaner/AdwCleaner[S51].txt - [5547 B] - [2016/7/7 8:18:38]
C:/AdwCleaner/AdwCleaner[S52].txt - [5621 B] - [2016/7/11 9:16:10]
C:/AdwCleaner/AdwCleaner[S53].txt - [5695 B] - [2016/7/13 6:51:15]
C:/AdwCleaner/AdwCleaner[S54].txt - [5769 B] - [2016/7/16 8:28:36]
C:/AdwCleaner/AdwCleaner[S55].txt - [5843 B] - [2016/7/19 7:46:23]
C:/AdwCleaner/AdwCleaner[S56].txt - [5917 B] - [2016/7/22 10:6:32]
C:/AdwCleaner/AdwCleaner[S57].txt - [5991 B] - [2016/7/30 13:51:38]
C:/AdwCleaner/AdwCleaner[S58].txt - [6065 B] - [2016/8/11 11:15:43]
C:/AdwCleaner/AdwCleaner[S59].txt - [8859 B] - [2016/8/13 10:29:2]
C:/AdwCleaner/AdwCleaner[S5].txt - [6981 B] - [2015/9/24 14:34:28]
C:/AdwCleaner/AdwCleaner[S60].txt - [8933 B] - [2016/8/13 10:30:59]
C:/AdwCleaner/AdwCleaner[S61].txt - [6660 B] - [2016/8/13 10:37:35]
C:/AdwCleaner/AdwCleaner[S62].txt - [7404 B] - [2016/8/19 8:5:1]
C:/AdwCleaner/AdwCleaner[S63].txt - [7003 B] - [2016/8/20 7:45:6]
C:/AdwCleaner/AdwCleaner[S64].txt - [7077 B] - [2016/8/24 8:2:23]
C:/AdwCleaner/AdwCleaner[S65].txt - [7153 B] - [2016/8/25 8:29:9]
C:/AdwCleaner/AdwCleaner[S66].txt - [7227 B] - [2016/9/2 8:36:22]
C:/AdwCleaner/AdwCleaner[S67].txt - [7458 B] - [2016/9/5 7:44:23]
C:/AdwCleaner/AdwCleaner[S68].txt - [7606 B] - [2016/9/5 7:56:28]
C:/AdwCleaner/AdwCleaner[S69].txt - [7680 B] - [2016/9/6 14:14:35]
C:/AdwCleaner/AdwCleaner[S6].txt - [10269 B] - [2015/9/28 7:21:48]
C:/AdwCleaner/AdwCleaner[S70].txt - [7597 B] - [2016/9/6 14:27:8]
C:/AdwCleaner/AdwCleaner[S71].txt - [7671 B] - [2016/9/8 13:33:51]
C:/AdwCleaner/AdwCleaner[S72].txt - [7745 B] - [2016/9/13 9:14:49]
C:/AdwCleaner/AdwCleaner[S73].txt - [7901 B] - [2016/9/15 9:14:31]
C:/AdwCleaner/AdwCleaner[S74].txt - [7967 B] - [2016/9/15 9:32:45]
C:/AdwCleaner/AdwCleaner[S75].txt - [8041 B] - [2016/9/26 9:0:10]
C:/AdwCleaner/AdwCleaner[S76].txt - [8444 B] - [2016/9/28 10:24:6]
C:/AdwCleaner/AdwCleaner[S77].txt - [8263 B] - [2016/9/28 10:32:13]
C:/AdwCleaner/AdwCleaner[S78].txt - [8337 B] - [2016/10/7 8:38:15]
C:/AdwCleaner/AdwCleaner[S79].txt - [8411 B] - [2016/10/14 11:32:54]
C:/AdwCleaner/AdwCleaner[S7].txt - [10086 B] - [2015/10/5 12:22:19]
C:/AdwCleaner/AdwCleaner[S80].txt - [8485 B] - [2016/10/15 10:50:26]
C:/AdwCleaner/AdwCleaner[S81].txt - [8573 B] - [2016/10/20 5:51:29]
C:/AdwCleaner/AdwCleaner[S82].txt - [8647 B] - [2016/10/24 14:36:16]
C:/AdwCleaner/AdwCleaner[S83].txt - [8721 B] - [2016/10/29 8:53:29]
C:/AdwCleaner/AdwCleaner[S84].txt - [8795 B] - [2016/10/30 14:19:31]
C:/AdwCleaner/AdwCleaner[S85].txt - [8869 B] - [2016/11/3 10:43:47]
C:/AdwCleaner/AdwCleaner[S86].txt - [8943 B] - [2016/11/11 13:0:49]
C:/AdwCleaner/AdwCleaner[S87].txt - [9017 B] - [2016/11/13 14:25:27]
C:/AdwCleaner/AdwCleaner[S88].txt - [9091 B] - [2016/11/21 9:15:36]
C:/AdwCleaner/AdwCleaner[S89].txt - [9165 B] - [2016/11/23 10:0:42]
C:/AdwCleaner/AdwCleaner[S8].txt - [9961 B] - [2015/10/6 6:20:27]
C:/AdwCleaner/AdwCleaner[S90].txt - [9239 B] - [2016/12/1 14:57:38]
C:/AdwCleaner/AdwCleaner[S91].txt - [9313 B] - [2016/12/2 9:42:7]
C:/AdwCleaner/AdwCleaner[S92].txt - [9387 B] - [2016/12/4 6:19:47]
C:/AdwCleaner/AdwCleaner[S93].txt - [9461 B] - [2016/12/5 12:0:59]
C:/AdwCleaner/AdwCleaner[S94].txt - [9535 B] - [2016/12/16 10:41:48]
C:/AdwCleaner/AdwCleaner[S95].txt - [9938 B] - [2016/12/19 15:10:12]
C:/AdwCleaner/AdwCleaner[S96].txt - [9757 B] - [2016/12/21 17:15:47]
C:/AdwCleaner/AdwCleaner[S97].txt - [9831 B] - [2016/12/23 15:10:39]
C:/AdwCleaner/AdwCleaner[S98].txt - [10529 B] - [2017/1/2 7:7:8]
C:/AdwCleaner/AdwCleaner[S99].txt - [10349 B] - [2017/1/2 7:14:50]
C:/AdwCleaner/AdwCleaner[S9].txt - [5539 B] - [2015/10/8 15:4:59]
########## EOF - C:\AdwCleaner\AdwCleaner[S125].txt ##########
If you now try to delete the findings, the above mentioned error message appears and ADW stops deleting the findings. What i have done, i deleted the folder "C:\ProgramData\Audyssee Labs" manually, started a new scan, ADW now found only the "PUP.Optional.Legacy" (belong to Norton Security! F/P?), i started the deletion of the findings (now without any error message) and everything is fine.