Hey,

I've been having alot of trouble with solidworks assemblies.  The following problems have occurred:

1. Mates and some parts in sub assemblies in the final assembly often break and some parts mysteriously disappear.  I have to restart solidworks, rebuild, save, and do random things or just restart to get everything back to normal.
2. After changing parts to be transparent in a final assembly, turning them back to their original non transparent state takes off the appearance of the parts that were transparent.  For example, the wood look turns back into the original solidworks grey (no appearance) yet the sub assembly files alone are still the same.
3. Some parts in the overall assemblies freeze all of a sudden and cannot be moved.  The parts are made flexible in all assemblies and none are fixed so I don't believe this should be occurring.

These are just a few of the glitches that I am finding.  Anyone have any solutions or tips?  I was thinking that there is too much going on in my assemblies but compared to other assemblies I see in solidworks, that cannot be true.  Could it be my computer?

Thanks!