How about the versions of GateIn installed on the two computers? Are they identical?
Do you have the answer?
You should also export the JCR values saved on the file system in addition of the databases.
One proper way is to "export" the JCR, but you cannot really export a JCR workspace, that's why for some of them (like the portal-system) we put the content in a top node (/production for portal-system), so you can export it and then reimport it.
Onc solution is that for each workspace you export the relevant top node as JCR export (it's an XML file). One way to achieve that is the usage of the CRaSH shell that allows to make such import/export natively.