Comment 2 for bug 307195

Tested with XP-SP3, rev20398 (Dec 23 2008), same behaviour.

And some other problems with layers when two instances are running, probably related.

* Inactive Layers dialog
1. Open two blank instances.
2. Open the Layers dialog in the second instance.
3. Select the first instance, and then the second again.
4. Try to add a new layer in the second instance (+ button or right-click menu). Nothing appends.

* Other actions leading to a crash (after steps 1-4)
5a. Open the Layers dialog in the first instance and click on the default layer in the list.
5b. Click on the lock (or eye) in the layer list.