MSN BackUp is indeed a standalone app which AFAIK doesn't bundle anything that could interfere.
What I find most interesting is:
quote:
Originally posted by apeclys
after installing MsgPlus 5, I opened WLM without any problem (several times). But when I restarted the computer and tried to open it again, I got the same error
When WLM did work that short time, are you sure Messenger Plus! was loaded too, did you see the Plus! icon on your contacts list?
If you want to help by experimenting a bit: If you try re-installing Plus! again, does WLM work again (for a limited time)? If it does, click on the Plus! icon in your contact list and go to Preferences & Options > Import/Export > Export Current Settings... and make a backup of all your settings
except for:
* Features' Passwords
* External E-Mail Accounts
* Contacts' Settings and Statistics
This should make a backup of all your Plus! settings without revealing private information. You can then add the .pld file to a .zip file and attach it to your reply. I admit it's just a wild guess, but maybe it is some combination of Plus! settings.