Thanks TIG,
I had assumed that I did have read/write permissions for the plugins folder but had read only, now it works..
these things always seem so obvious when solved..
this forum just saved me from a lot more faffing around,
Cheers,
O.

Hi folks, this is my first post to this forum...
I am new to sketchup and just purchased a license for pro 8.
My issue is related to this topic in that I am unable to install extensions/ruby scripts.
Here is a screen shot of the error message:

My operating system is OSX 10.6.8 (snow leopard), here is a screen shot of my disc settings:

Still no banana however...

Any advice would be greatly appreciated, I am not a computer wiz but I can follow instructions!
Thanks kindly,
Orion.