It only has the ORG file.
No idea what happend to the d2x file...
So is the stash screwed?
No, the D2X has just disappeared. Rename the most recent .org file extension to .d2x and your stash should be back again.
From the ATMA FAQ:
Don't panic. If you screw up or lose an item, simply uncheck the "autosave" option, close the stash or mule the item came from, and reopen it. Everything should be there. If you accidently save after losing an item, ATMA creates .org backup files. Simply look in the folder where the file (d2s or d2x) resides, and there should be a .org backup file (ATMA creates up to 9). You can rename the backup .org to the correct extension (.d2s or .d2x) and start again.