Hey guys. . . check this thread out:
Forums at Splitcoaststampers
The names that you've chosen for your file (that is, the name of the file on your computer) needs to be a bit more unique.
We have had a LOT of duplicates since the server's being a bit wonky lately, and scan for duplicates pretty often. If the server picks up two files with the same name, . . . POOF! The most recent one is deleted.
Hopefully this answers your questions. Let me know if I can help in any way! Thanks for sharing your creations with us!