Dear Dider,

Your layer manager is really great.
I could't imagine sketching without it.

The first time when I used your plugin I realized that some layers are not managed. After experencing with different versions of the plugin (V5, V6, V21) everything worked perfect for me. Though I was wondering why some symbols on the toolbar were twice available.
Now when I set up Sketchup on a new machine I installed only the newest version (V21 isn't it?). On the virgin installation the troubles with some layers were back.
After some new experencing I found out:
Layers containing German letters (probably UNICODE?) in their name are not saved or restored.
If "display layer config" is pressed the plugin shows that there are layers in the model which are not in the config. The same layers (but for each special character one caracter shorter) are listed in the saved layer config but not in model. (see attached screenshot)

Now I've tested this on several different machines (2GHz Dualcore WinXP Pro, 2,2GHz Core2Duo WinXP Emb MU, 2,8GHz Core I-7 Win 7 Pro 32bit, 3,3GHz Xeon Win7 Pro 64). Everywere the same behavior.

When I compared what was different to my very first setup I found out that the additional symbols came from the layer_manager_extension_v5.rb. In this combination the names of "German" layers are displayed shortened by the number of special characters too but saving and restoring commands (from version 21) work perfectly.

Dear Dider. Please find this little annoying (German) bug and fix it.

Best regards