HTC Hero : Google Contacts Sync Stopped Unexpectedly

I just installed the ContactSync app on my Hero, and all my contacts are easily been transformed into google contacts. But when I try to sync contacts with Google, it thinks a bit and then comes with an error message:
"The process android.process.acore has stopped unexpectedly. Please try again."

When I go into my gmail contacts, there are only 57 contacts out of the 173 I have the phone, plus some of them in my gmail has duplicates.

Had done a backup of my contacts using Secure Wave. Made as a CSV file via Secure Wave, which I could then import in my gmail. Fine, so now I had about 240 contacts in my gmail (Around 80 more than I had on my phone?)

That caused a bit of a problem since they apparently don't work in the same way.
So now I hava about 50 numbers that are now called "Mobile" when they on the phone was called "name Mobile" and a lot of unknown numbers labeled on the cell phone as they only had one name on the phone.

But i guess all this can be solved with a lot of editing on the computer. But then when I go into "view" menu under contacts it says I have 352 google contacts (should be about 173) and none phone contacts (Which is fine since they all got converted into google contacts) :S, plus when I'm inside contacts and look, I get the following error message every time my phone tries to sync with google:
"The process android.process.acore has stopped unexpectedly. Please try again. And then I can just press "Force close" after which I will return to my Home screen.

Someone who knows what went wrong and how I solve it?

Hope all this made sence, since most of this is turned into English from my danish post in another forum, using google translate.