Descriptive Problem Summary:
I was trying to test my game and it didn't connect me for some reason on the DMB, so I went to the coding and I clicked on a file, then compiled in the Dream Maker, and it said "Cannot Read 3rd Hokage.dm" or some kind of error message to that extent. So now I dont pay any mind to it and I compile again, and I see it again, so then I close Dream Maker and reopen the same file and it says it doesn't exist and it removes it from the list. Now I'm like "What the hell is this!?" and I look at the folder and suddenly the file was missing, so I check the recycle bin and every file I deleted before my last recycle bin clearing (which was yesterday) was there except for the file.
Numbered Steps to Reproduce Problem:
I compiled on another file and I got the same error message, however the file wasn't deleted.

Expected Results:
Successfully compiling the game making it able to be ran
Actual Results:
Gives an error saying "Cannot read [filename].dm!" and when Dream Maker is restarted, it deletes the file at start up and gives the "File not found. Removing from list" error.
Does the problem occur:
Every time? Or how often?
It hasn't happened until just today. I hadn't installed the latest Byond today just so you guys know that it didn't happen with past releases.
Edit: It happens once and a while, but not too often.
In other games?
Yes (Good thing I created backup files for them in case I got the same results, which I did)
In other user accounts?
Yes, I tested with another account (Iobject)
On other computers?
Yes

When does the problem NOT occur?
When I was in the previous update of Byond

Did the problem NOT occur in any earlier versions? If so, what was the last version that worked? (Visit http://www.byond.com/download/build to download old versions for testing.)
Byond 488
Workarounds:
Keep backup files, make sure "Show all files" is unchecked, it still happens with it unchecked, but it doesn't do it as often.