Still in my Trial Period...

Here's a truly disconcerting one: After making a few minor changes to my shop, I clicked "Save Shop".
That gets me the message "Failed while trying to save".

Bad news!

The only time I have seen this error is for users who have Trend Micro installed or some other Anti-Virus program that prevents the writing to the temp folder. If you disable that program, everything should work.

I also think there is an option in the software to allow applications to write to the temporary folder. You may want to enable that.