Changing map causing messages to drop

[steveb25]

Hi All

Just noticed a little something wondered if anybody else had noticed.

When I change the map from default to one generated by myself the message total keeps dropping to 0 (zero) and all the tracks disappear. It eventually looks like it freezes, but the program is still in fact running.

It doesn't happen in the default map where the message count is always about 150+

Anybody else noticed this?