Accursed size errors...followed me from the Theater, did you? While the Theater's setup is slightly different from the TMF's (The main difference being that Javascript enhances the uploading function somewhat at the Theater), this is precisely the same problem we have encountered time and time again. First is a problem of size. Next time you try to upload a 1.8, 1.9, 2.0 MB file, right-click on it and select "Properties." Look at the numbers. Do you see " Size," "Size on Disk," and the two numbers in parentheses? The "Size on Disk" and parenthetical numbers are larger than or really close to 2.0, right? Those are the ACTUAL sizes of the file, and are often much larger than the file's displayed size would lead you to believe. Why they differ so much I still do not know.
The second possible cause is simple, yet extremely annoying: the forum software (vbulletin) is a worthless, festering boil when it comes to uploading files that approach the limit (Note: This somewhat ties into the first reason). It sees larger files as bigger than they are (Even bigger than the "Size on Disk" number says it is), and thus complains. Additionally, the 2.0 limit is not exact. It is more of a zone than a value, with sizes falling into a small range below 2.0 being rejected as if they were bigger than 2.0.
However...I've never seen it cough up an error message when loading files before...I HIGHLY suspect that a) the server it is on is not allowing file uploads of a certain size due to some restriction or issue with its OS, mySQL (Unlikely), PERL, the attachments directory not allowing large files, or whatever or b) the forum has some problem that is preventing files from being correctly uploaded. I suspect a server issue more than a forum one if only because the Theater doesn't do that and it is on the same basic level of vbulletin.
My last theory of the night, and the one I like best, now that I think about it: it is TRYING to locate and display the "Upload too big, larger than limit" sort of message, but cannot find it, or is pointed to it by bad code. Of course, that only pertains to why the error message is appearing, not why some files will not upload.
I HATE forum errors...
[EDIT]: First, it is reading my .rm files as .ram as well, Ann. That problem I have not seen before. Then again, .ram is enabled at the Theater last I checked, so it may not have been noticed (Wheras here .ram is not on the list, and thus treating .rm as .ram produces an error. Second, I just noticed that files over 1.0 M seemed to be dying, as you said. Here we have ANOTHER problem the Theater had. I don't know why, but one day, possibly after the upgrade to 3.x.x, vbulletin stopped allowing anything above a certain limit (1.0 I believe) that was a MB or so lower than the maximum. As far as I know, that problem went away when TT raised the attachment limit to 5 MB (Or whatever it is at now). If that actually cured the problem or merely moved it up so much as to render it meaningless I do not know for sure.
