Hello all, i have some problem with my doc to go from my nokia n900, its seems that my doc to go is not working anymore.When i try to open a doc i get the popup message: "Documents to go has expired.If you`ve purchased an activation key, please select active to eneter it. to purchase a key please select buy"

So i need a registration number and a activation key, did someone had or has this problem?I try to search for an reg key and activation key on google but nothing works, hope could someone help me, thaks.