The author's home page has them....
r-2,r-3, and r-4. (R=Revisions)
Revision 2:
http://code.google.com/p/eis/source/browse/?r=2Revision 3:
http://code.google.com/p/eis/source/browse/?r=3Revision 4:
http://code.google.com/p/eis/source/browse/?r=4Click on the folder called "trunk" .... From there you can navigate to download all sub folders....
you might want to view all the folders carefully so you do not miss any thing that may not be in the release folder , called "_DISTRIBUTE"
Revision 2

:
http://eis.googlecode.com/svn-history/r2/trunk/_DISTRIBUTE/eissrc1301.RARRevision 3

:
http://eis.googlecode.com/svn-history/r3/trunk/_DISTRIBUTE/eissrc1301.RARRevision 4

:
http://eis.googlecode.com/svn-history/r4/trunk/_DISTRIBUTE/eissrc1301.RAR