A change in A2SERVER between 1.2.5 and 1.5.0 is that your AppleTalk shares no longer live in /media. Now they're in /srv which is more Linuxically Standardistically correct.
A2CLOUD tries to do stuff with A2SERVER in a block presently at lines 540-571 of setup.txt. This needs to be updated. It could either be made to work with either path, or just be changed to use /srv exclusively.