I only saw your post recently (nobody notified me that the Toolkit was broken).
I've made changes to two of the ExtPascal Toolkit packages that should allow you to compile and install them with Lazarus 0.9.31 and later. (Don't use with earlier versions of Lazarus.)
Note that these problems had nothing to do with ExtPascal, the Toolkit, or FPC, but rather are due to the mercurial nature of Lazarus, which regularly breaks packages that once compiled fine.
I've also made changes to Orpheus, which the ExtP_Grid package depends on. Again, same issue - broken by Lazarus.
Videos and additional material for the Toolkit is here:
http://dl.dropbox.com/u/28343282/ExtPascal/index.htmlThanks.
-Phil