Hi I just recently checked some older files and projects where I used some plugins which are not missing at the moment, Does anyone know how I can fix this? I'm missing my Cakewalk fx:eq and others like Cakewalk fx:Reverb.
 
How can I regain the plugins that are missing? Thanks in Advance

Many older Cakewalk DX plug-ins were never ported to 64bit. In order to open project with these old plug-ins requires installing the plug-ins from an old version of SONAR and installing a 32bit version of SONAR. This post contains a link to a document showing plug-ins bundled with SONAR Producer 3 through Platinum.
 
By default the Command Center installs the version of SONAR appropriate for your OS. To see the 32bit install option enable "Verbose Install" in Command Center settings. The settings page is accessed by clicking on the Gear in the upper-right of the Command Center UI.
 
Both 32bit and 64bit versions of SONAR may be installed on the same PC.

Thanks for the help! :) before I go Know any advise on how to fix latency in sonar platinum?

The causes of and solutions to latency have never changed. The two causes are audio interface driver buffers and plug-in delay compensation. Audio buffers changes are made in the manufacturer supplied client for ASIO driver mode and Preferences > Audio > Driver Settings "Buffer Size" slider for all other driver modes. To see if plug-ins are contributing to latency type "E" or click the FX button in the Mix Module to bypass effects. If the latency is significantly reduced, one or more plug-ins are contributing to PDC. While reading about the FX button check out the PDC button, the toggle for Live Input PDC Override.