Subbu,
The Etoys vm (3.10-3/squeak) reports the following error on Ubuntu Gutsy when running etoys-dev-3.0 image:
ioFindExternalFunctionIn(primitiveUTF8StringWithIndex, 0x810ccf8): /usr/local/lib/squeak/3.10-3/RomePlugin: undefined symbol:
primitiveUTF8StringWithIndex
This looks like you are not using the very latest RomePlugin (The squeaksource seems to be down at the moment, but you can get it from there). Also, make sure that the image is fully updated (which I think you did).
-- Yoshiki