Unable to restore database, get error " The file "_log" failed to initialize correctly."

I know that there was an issue prior to SQL 2008 R2 SP1, where if you encrypted the database and then turned off TDE, you were unable to restore the database anywhere else other than the server it came from... Well, my server is on SP1 or SQL 2008R2 Sp1 to be sure. But this issue is for SQL 2008 R2 before CU4. But I have SP1 installed or it is 10.50.2500...

So when i attempt to restore the database to another server, i get the error message "The file "<database name>_log" failed to initialize correctly."

How do I resolve this issue?

Here is an article about the issue for your reference... KB 2300689

http://support.microsoft.com/kb/2300689

Do i need to apply CU4 to my system? I thought SP1 has the fixes that CU4 contains? 

Thank you in advance....