When loading Seaside from the public Store repository on a non-Windows machine, you may get an error similar to "no such file or directory psql_public_cst/Seaside/VWSupport279.pst"
This is caused by some $/ characters in package names that Store does handle correctly. Until Store is corrected, a local fix is to manually create a directory called psql_public_cst in the directory containing your image. In psql_public_cst create a directory called Seaside. Then load the bundles proceeds as per normal.
The newest versions of Seaside include a patch to Store that prevents the problem from occuring.
-Information courtesy of Michel Bany