Progressive meshes produce a warning not an error so these can be ignored as they will still work.
The texture problems can be fixed by dropping in the missing textures from another asset. If it still produces an error this means that unsupported errors have been used which can be fixed most of the ime using PEVs PM2IM tool, do a search on the net and download this. Set the options to zero speculars and strip unsupported textures. This then produces a fixed .im file which can simply be dropped back in to the asset. If you are really pedantic you can even convert your .pm meshes to .ims to get rid of the warnings, but you also need to re-reference the config mesh table so that .pm ref reads .im.
