http://bugs.winehq.org/show_bug.cgi?id=24699
--- Comment #7 from Bruno Jesus 00cpxxx@gmail.com 2013-05-16 09:18:11 CDT --- Created attachment 44482 --> http://bugs.winehq.org/attachment.cgi?id=44482 crash in wine-1.5.30-88-g7559526
Judging by the date the most probably version the user was using is Explorer++ 1.2 released in September 2010. http://explorerplusplus.com/software/explorer++_1.2_x86.zip
I can still reproduce the issue, it's somewhat random. To reproduce it click on My Computer in the left tree, click twice in Drive C in the right pane. This will open a new tab. Try to go back to the My Computer tab. Now go back to C and try to close it. If the problem does not happen switch tabs and try again.