Sketchup-obj-collada model import error

[SKYNET-71]

Hi, i need help please.
-Import collada file : miniature empty in window selecting file an import failed with work plan empty.

-Import obj : in plugin menu i select obj import > file (a lot of time dowloading)= model destroyed in work plan.

I have also problem with the 3d webgl viewer in Sketchup 3d Warehouse, and "Extension Warehouse" in Window menu is missing.

My current Sketchup version is: 8 pro 2013 (m2).

Thanks a lot for help.

[Rich O Brien]

Tweak in unit type for the import