Dear all, I've beeen using the latest Mac version of Google Sketchup, I was able to Undo without any problem. However, suddenly today whatever things I did I can't undo anymore. The undo shortcut command-z doesn't work, the menu under Edit is always dimmed. This happen for new and old files.

Also two werid things are occuring: 1. no undo anymore 2. text button doesn't depress when I click, I can still create text from arrow but whatever I typed the text became measurement, i.e. 1002mm 3. When I add layers, in the layers window it doesn't show. However, when I save the file and reopen the new layers I created but didn't show can be seen again.

I'm using Dual 1 GHz PowerPC G4 1MB L3 cache per processor, 1GB DDR SDRAM, OSX version 10.4.10.

Any hint?