I am trying to get my full vector portfilio on Shutterstock but keep getting the following rejection:

'JPG thumbnail does not match EPS file, please correct and resubmit'

They have accepted 51 files which have exactly the same technical requirements as the many rejected ones.

I use corel draw x4.  My full portfolio is on istock and deposit photos without any problem.

My question is this: If i can import my 830 odd corel vectors into AI (which i don't possess as yet) and then upload as eps to shutterstock will they be likely to not get this tiresome rejection anymore?

help much appreciated.