ID:1910748
 
BYOND Version:508
Operating System:Windows 7 Ultimate 64-bit
Web Browser:Chrome 45.0.2454.15
Applies to:Dream Seeker
Status: Open

Issue hasn't been assigned a status value.
I haven't been fully able to reliably reproduce this, but getting disconnected by the server shortly after doing a resource download or closing the loading resources window during resource download has a chance to cause the byond.rsc file to disappear from the cache folder. It seems to be rare, and might be caused by something else, but this is the only common factor.