@unknownuser said:

do you have podium installed by any chance?

bool tools & sub/smooth have complications with podium but it can be sorted out..

I don't have podium. Here are the plugins which I have tried that also just don't show up in Sketchup on either Mac:
-btm sculpt tools
-bool tools
-subdivide and smooth
-extrude tools
-round corner
-clf shape bender
-draw helix
-offset
-tools on surface
-unfold tool
-Fredo Scale
-sketchy bevel
-sketchy FFD (seems to have trouble working like expected)
-soap skin bubble (works only if i force it to load using Plugin Ruby resources)

There are more plugins which will not load either. It seems to be about 70% won't load. The other 30% show up in Sketchup, but only half of those seems to work right.

OS X's Sketchup has two plugins folders that I could find. I tried both. I tried just adding one plugin at a time. I tried repairing permissions. I tried the trial pro version, I tried praying to the dark Gods of 3D…okay i didn't really try that last one, but I'm really stuck—maybe i should.

I do have some plugins that DO work:
-curve stitcher
-weld
-bezier
-tube along path
-FFD (kinda works, i can't load any toolbars for it only right click options work)
-Soap Skin Bubbles (has to be force loaded by Ruby Resources plugin—each time i launch Sketchup)
-uuhhhhh… i guess thats all I am able to use right now.

I am running Sketchup 7.1 on two machines, Mac OS X one Leopard and the other on Snow Leopard. First off, the Snow Leopard install has lots of problems. Installing plugins is a close second place to just getting performance issues on a brand new iMac Core i7 with 8GB of RAM.

I have tried to install SubSmooth and Bool Tools (which I bought from smustard) I can't get either plugin to appear on either a Core2 duo iMac running 10.5.8 or an Core i7 running 10.6.

Here is what I have tried so far:
I have pulled out all other extensions and tried installing only one plugin at a time to see if any would show up and I can't get these two and several other free ones to load either.

I can get some plugins to work on both machines, but not these two. Also Freeform Distort is wonky on both systems. Does anyone else have these issues with plugins like I do? Are there any solutions? Thanks in advance.