UR hangs

[dasymington]

Since version 2 came out I've often had UR hang showing the hourglass. This doesn't seem to happen after any particular event. Now it's hanging with a message saying "The data area passed to a sytsem call is too small".

Closing UR with task manager doesn't help because the next time I start it up it's still hanging with the hourglass showing. I've checked that all instances of UR are closed.

Sometimes I can get round this by double-clicking on a small UR database in Windows Explorer, but not this time. I usually have to reboot my system, which is obviously very inconvenient.

Any ideas what can be causing this?