An error has occurred during processing of the CustomReportItem. Could not load file or assembly 'Microsoft.ReportingServices.Designer, Version=9.0.242.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' or one of its dependencies. An attempt was made to load a program with an incorrect format.

Need immediate help on the below issue.I'm getting above error when I run an SSRS report. Environment Details:1. SSRS 2012 (Report Server)2. We haven't upgraded the reports (still 2005). Most of the reports are working fine except the one or 2 which is showing the above error. 3. This is report is loading fine from BIDS but when deployed on SSRS server (2012) Showing up the above error. I have already made changes on IIS to run my app pool to be 32bit.