User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.12) Gecko/20050915 Mnenhy/0.7.2.0 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.12) Gecko/20050915 Mnenhy/0.7.2.0 One cannot send mail with attachment directly from other programs. The subsystem for composing new message with attachement is broken. The only way how to send attachements is to start with blank message and manually attach already existing file. Verified on three different installations (all Win-XP). Reproducible: Always Steps to Reproduce: 1. Open any document in common program (like MS Word, Excell, Corel WordPerfect...just name it) which has feature "send as attachment" option. 2. In menu (most likely File) select "send as attachment"-like action 3. Error message appears or strange behavior of a program in question starts. e.g. "General Mail Failure....", "Logon failed...unspecified error", "File not saved" Actual Results: See above. Expected Results: Compose newmail with the specified attachment. Regression from Seamonkey 1.0.7 and before.
I am quite tempted to make it dupe of bug 361233, however the hotfix described (regsvr32 MapiProxy.dll) did not solved all problems with CorelOffice (WordPerfect, Quattro...).
Reinstall of CorelOffice solved the problem. Marking as dupe.