Looks like the zetacoin-qt.exe ignores the -datadir argument. No matter what folder is provided, the data directory always defaults to the %AppData% folder.
If an invalid folder is provided the client will throw an error as expected, but if a valid folder is provided for the data directory argument, it is ignored.
Dev,
Can you investigate this issue?
Ref:
https://en.bitcoin.it/wiki/Data_directoryHas this datadir bug been fixed yet? I'm having issues doing custom data directory for zetacoin here