I am having some strange problems with this version. Here's what it seems to happen: I run it and have my sets deemed OK (0.120). Then the next time I run it, it asks if it's OK to delete some files from dsfdct, wschampa, royalmah, yukon1 perhaps others. I click OK (note I do have a backup folder but nothing new is being saved there) then the next time I run it, some files from other sets are missing. I have no clue about what's wrong there.

Update: every time I run it always asks the same questions. I am updating from 0.119u4 to 0.120. Those questions are:

Do you want to delete 'C:\mame\roms\dsfdcta\gc910jc.u1' ?
Do you want to delete 'C:\mame\roms\dsfdcta\gc910jc.u6' ?
Do you want to delete 'C:\mame\roms\dsfdcta\ge887ja_gn887ja.u1' ?
Do you want to delete 'C:\mame\roms\dsfdcta\ge887ja_gn887ja.u6' ?

Do you want to rename all wrong named roms in 'C:\mame\roms\royalmah.zip'?

Do you want to delete 'C:\mame\roms\royalmah\1.c110' ?
Do you want to delete 'C:\mame\roms\royalmah\1.p1' ?
Do you want to delete 'C:\mame\roms\royalmah\10' ?
Do you want to delete 'C:\mame\roms\royalmah\18s030n.6k' ?
Do you want to delete 'C:\mame\roms\royalmah\2.c109' ?
Do you want to delete 'C:\mame\roms\royalmah\2.p2' ?
Do you want to delete 'C:\mame\roms\royalmah\20' ?
Do you want to delete 'C:\mame\roms\royalmah\3.c108' ?
Do you want to delete 'C:\mame\roms\royalmah\3.p3' ?
Do you want to delete 'C:\mame\roms\royalmah\30' ?
Do you want to delete 'C:\mame\roms\royalmah\4.c107' ?
Do you want to delete 'C:\mame\roms\royalmah\4.p4' ?
Do you want to delete 'C:\mame\roms\royalmah\5.p5' ?
Do you want to delete 'C:\mame\roms\royalmah\6.p6' ?

Then it spents a lot of time on wschamp, comes with these:

Do you want to delete 'C:\mame\roms\wschampa\as1001m01.u38' ?
Do you want to delete 'C:\mame\roms\wschampa\as1002m01.u39' ?
Do you want to delete 'C:\mame\roms\wschampa\as1003m01.u40' ?
Do you want to delete 'C:\mame\roms\wschampa\as1004m01.u41' ?
Do you want to delete 'C:\mame\roms\wschampa\as1005m01.u18' ?
Do you want to delete 'C:\mame\roms\wschampa\as1006e02.u06' ?
Do you want to delete 'C:\mame\roms\wschampa\as1007e02.u07' ?

After it goes on yukon1:

Do you want to delete 'C:\mame\roms\yukon1\xbl.12h' ?
Do you want to delete 'C:\mame\roms\yukon1\xbl.2h' ?
Do you want to delete 'C:\mame\roms\yukon1\xbl.3k' ?
Do you want to delete 'C:\mame\roms\yukon1\xbl.4k' ?
Do you want to delete 'C:\mame\roms\yukon1\xbl.5k' ?
Do you want to delete 'C:\mame\roms\yukon1\xbl.6k' ?
Do you want to delete 'C:\mame\roms\yukon1\xbl.7k' ?
Do you want to delete 'C:\mame\roms\yukon1\xbl.8k' ?
Do you want to delete 'C:\mame\roms\yukon1\xbl.9h' ?
Do you want to delete 'C:\mame\roms\yukon1\yua-1.1h' ?
Do you want to delete 'C:\mame\roms\yukon1\yua-1.1k' ?
Do you want to delete 'C:\mame\roms\yukon1\yua-1.1l' ?
Do you want to delete 'C:\mame\roms\yukon1\yua-1.1m' ?
Do you want to delete 'C:\mame\roms\yukon1\yua-1.1n' ?
Do you want to delete 'C:\mame\roms\yukon1\yua-1.1p' ?
Do you want to delete 'C:\mame\roms\yukon1\yua-1.1r' ?
Do you want to delete 'C:\mame\roms\yukon1\yua-1.1s' ?
Do you want to delete 'C:\mame\roms\yukon1\yua-1.1t' ?
Do you want to delete 'C:\mame\roms\yukon1\yua-1.2k' ?
Do you want to delete 'C:\mame\roms\yukon1\yua-1.2l' ?
Do you want to delete 'C:\mame\roms\yukon1\yua-1.2m' ?
Do you want to delete 'C:\mame\roms\yukon1\yua-1.2n' ?
Do you want to delete 'C:\mame\roms\yukon1\yua-1.2p' ?
Do you want to delete 'C:\mame\roms\yukon1\yua-1.2r' ?
Do you want to delete 'C:\mame\roms\yukon1\yua-1.2s' ?
Do you want to delete 'C:\mame\roms\yukon1\yua-1.2t' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.10c' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.10d' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.11c' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.11d' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.1b' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.1c' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.3a' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.3b' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.3c' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.4a' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.4b' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.4c' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.4d' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.6a' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.6b' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.6c' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.6d' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.7b' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.7c' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.7d' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.8b' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.8c' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-1.8d' ?
Do you want to delete 'C:\mame\roms\yukon1\yul-20.1a' ?

I reply Yes to all the above questions and they are asked again every time I run Scan. It turns out that none of those files were actually deleted or renamed at all. No new zipped files are created on 'C:\mame\roms'.