Error Message Accounting With Peachtree Complete 2012

Does anyone know how to solve an “Accounting” error with Peachtree Complete 2012? I just got the product and I installed it, and I encountered no problems. But I can’t seem to open it, I just get an error saying the Peachtree is unable to connect to its database.
I have the complete detail of the error below.

* Peachtree Accounting
Peachtree is unable to connect to its database, Pervasive, on computer JOSE-PC.
Make sure the computer is logged in or that the database service is running. Also make sure the firewall is set to allow Peachtree and Pervasive to run. Click Help for more information. Click Retry to attempt to connect again.
I hope someone can fix this.
Thank you!
