http://bugs.winehq.org/show_bug.cgi?id=6801
--- Comment #39 from Tefnet developers developers@tefnet.pl 2008-04-14 16:20:06 --- (In reply to comment #38)
Created an attachment (id=12184)
--> (http://bugs.winehq.org/attachment.cgi?id=12184) [details]
screenshot
This popup is occasionally behind the main application and gives the impression that the main application is not responding.
As explained earlier - some applications actually checks the result of whether launching htmlhelp is successful or not - in this case, the check is more annoying than the problem, because the check requires the user to acknowledge it before the application can be used again.
I think it won't show up if we fix bug with accented URLs, because first help page is with accented char and that's why you have that msgbox.