Cannot create new Invoice after moving the domain to another server

[getonline]

I have moved the WHMCS system to another server.

 

After that when I try to create a new invoice for a client I get this error message:

Invoice ID Not Found

And the url: http://domainname.com/billingadmin/invoices.php?action=edit&id=0

 

Urgent help needed.

 

Thank you.

Edited November 6, 2013 by getonline

[IgnitionHosting]

I assume that you've transferred everything from your old server including the database?

[getonline]

Thanks for your reply. Yes I followed the proper transfer method successfully.

 

By the way I solved this issue. The problem was the sql_mode settings as the mysql was running in strict mode. When I disabled it in my.cnf (my.ini on Windows system) the problem is gone.