Move G2 to different server problem

Hi,

I try to move an existing G2 to another server.
1. I backup the database
2. I move the G2Data to the new server (temp folder).
3. install a new copy of the G2 on the new server.
4. copy all the contain from step 2 to the new G2Data location
5. restore the database from backup with the same table names.

6. I will be able to login with the old username password without problem

problem I encountered:

1. I have all the stucture I had before, however, there is not thumbnail (it's all broken link image)
2. if I go and view the image Full Size image, it show up alright.

anyone can see what the problems are??

I tried to run the thumbnail/resize from maintanence as well...doesn't seem to work either

thanks a lot