Let me first say that @Tmetcalf is aware of the problem and working on it.
I am just posting here as I have investigated a little bit more and I am curious if all of you have those problem, as at least on user had not.
There seems to be a list which tells Lithium which extensions should be allowed for attachments. RTF is not allowed (it should be added to the list) and that's the error message you get when trying to post a file which is not allowed:
As you can read, Mathcad files with extensions mcd, xmcd, xmcdz, mcdx should be allowed. But when I try to attach Mathcad files, I get a different error message and still am not allowed to do:
If that's true, nobody should be able to post mcd files - right?
What really puzzles me is that at least one user succeeded in posting a mcd file without manually zipping it first - no clue whats going on here. Its in this thread (its a pity we can't link to individual posts in a thread) https://community.ptc.com/t5/PTC-Mathcad-Questions/MathCad-11-how-to-make-the-result-shown-in-line-with-the/m-p/476124#M172199
As far as I found out we can directly post zip, pdf, mp4, avi, xls, gif files (and possibly a few others like doc, jpg, etc. as well - haven't tried).
Has anybody else (other than @anthonyQueen)
