@pickle1I have restarted iStripper - remaining option is full re-boot of PC.
Did you actually quit the program or did you just close the app's window. The X icon at the top left of the iStripper window does not result in the program quitting, it only closes the window. To quit you should use the Quit option on the systray icon.
This problem has always existed, and quit and restart has always fixed it for me. It seems to be due to something like a network glitch or timeout causing a server synch to fail (server synch are done at regular intervals by the program itself as well as on starting the app and when explicitly requested via the setting page - and all three seem to do slightly different things because, as in this case, a manual synch sometimes won't fix things..