I have a Nextel Blackberry 7520, and I was recieving the transaction error-decryption error. I am using Blackberry Desktop Manager version 4.0.1.10 and I upgraded my handheld software as well. I used DBclean and it fixed my issue with having the redirector work as well as being able to access pop3 email. I also set the key to generate manually that way it wont ever ruin it. I hope!!! Thank goodness to the inventor of dbclean. It did the job, without me having to downgrade to version 3.6. Nextel data support said it wasn't possible to have both!!! Thanks to Blackberry forums we showed them!!!