Thanks JerryLan but I didn't install the 32 bit version so I have no [drive]:ProgramFiles (x86)/Cakewalk/Dimension Pro/Programs  nor  [drive]:ProgramFiles (x86)/Cakewalk/Dimension Pro/Multisamples to even start your suggestion.

Try this.

Add [drive]:\program files\cakewalk\dimension pro to your vst scan folders list. Re-scan. See if that works first.

In that folder I also found an old Dim Pro 64.dll file dated 4/3/2006 and renamed it, then copied the newer .ddl file from [drive]:\program files\cakewalk\Vstplugins\dimension pro\ dated 8/30/2010 into the above directory.

Rescanned my plugins and Dim Pro is back. For some reason it would NOT use the .dll from the vst directory but would from the program directory. It even show BOTH .dll's as available when inserting a synth.

Hope that's clear enough and that it helps someone.

OK - I downloaded Dim pro from X1.  And when I install it - it says there is a previous version of Dim pro and I need to update to 1.5.  Then it takes me to a page that shows Dimension Pro/LE 1.5.  What is this LE 1.5??  This doesn't look right.  And why do I have to download again from and update page.

I had the same message so I uninstalled/reinstalled Dim Pro and had all kinds of problems but got it fixed. Check this thread.

http://forum.cakewalk.com/tm.aspx?m=2155863

Thanks so much for posting this. I followed your instructions for editing these registry keys and it worked perfectly!

Any further updates?  I'm having the same problem for the same reasons.

I got a reply from the technical support. I haven't tested it, yet. But, I have no doubt that it will work. Thanks, Clad!
 
Here is what happened:
Dimenseion Pro 1.5 is VST only. DXi is no longer supported. So, removing Dimension Pro from the system removed the DXi version that I was using in my existing projects.
 
The 1.2 Dimension Pro update can be installed to fix the problem where you want to only install the DXi version.
 
Or, you can replace the DXi version with the VST version. (I don't know how to look up what program I used if the synthesizer doesn't load...)
http://www.cakewalk.com/s...der.aspx?ID=2007013164
So, I will install Dimension Pro 1.2 DXi, and make sure that I will only use the VST version in the future.
 
Wilko

I had several problems with the downloads, many corrupt after hours of download.  Fortunately the discs came today.  I now face the dim pro issue.  The installer has located my previous paid version, and recommended that I download the update from cakewalk.com.  From reading here I conclude that I will not be able to load the additional content disc.  I have done no customizations worthy of saving.
 
Would my best course be to remove the current full paid version and install from the discs?  I am not big on regedit.
 
win 7 64 bit  lost the standalone some time ago.
 
I am surprised that cakewalk has not fully addressed this issue, since it is the existing users that are having the problems.
 
al

My problem with DimPro definitely has NOTHING to do with DXi as i never installed the DXi only the VST and only the VST64 [installed 1.2 from 8.5 media and updated to 1.5 immediately before doing anything]....after installing X1, projects created in 8.5 report DimPro missing in both 8.5 and X1........Dimension pro x64.dll resides in C:\Program Files\Cakewalk\VSTPlugins\Dimension pro like it has since 8.5.3 days....it reports as version 1.5.0.5 dated 21 May 2010.....DimPro scans in both X1 and 8.5 and new instances can be added to projects but existing instances are not found by projects.
I did not install DimPro when I installed X1 as I knew I already had DimPro1.5 installed.

I've looked at various options including a total disk wipe but would prefer if Cakewalk would provide detailed instruction as to how to clean up this mess that has resulted in me not being able to use 8.5.3 anymore........

not happy Cakewalk seem horribly silent about it - could someone at least acknowledge that there is a problem please.
No reponse to my CWBRN report

I now have D-Pro 1.5 and the additional content installed. Here's what happened to me:

Initial problem:
- Originally I had 8.5.3 PE installed and D-Pro 1.2.
- I tried to install the additional content. This failed telling me to install the patch to D-Pro 1.5.
- I patched D-Pro to 1.5.
- The additional content failed with the 'no valid D-Pro 1.5 installation'

Investigations:
- I then tried to uninstall D-Pro 1.5, but the add+remove programs applet thought I still had 1.2 installed. I clicked 'remove' and it failed with an error dialog.
- After searching the registry and looking at the disk I found that the uninstaller and data unins0000.* were missing from the Dimension Pro directory. So this is why the uninstall from the control panel was failing. Either D-Pro 1.2 or the 1.5 patch had not supplied an uninstaller.
- I tried renaming the Dimension Pro directory and DLL in the vstplusgins directory but that didn't work - the additional content installer must be using registry data to determine that D-Pro 1.5 is not installed and there is evidently some incompatibility.
- I considered uninstalling by hand but I figured that I might end up in a worse position - with my existing D-Pro installation deleted, but the registry still saying that it was installed (and it can be virtually impossible to clean out the registry unless you know the precise keys you're looking for).

Solution that worked for me:
- Don't attempt any manual uninstallation.
- Get your original D-Pro 1.2 install DVD and perform a full install over the top of the existing one.
- As soon as you've done that use the control panel to uninstall D-Pro. You're then left with a clean system.
- Use the X1-supplied D-Pro 1.5 installer
- Run the additional content installer (which is happy now that the D-Pro installation is the one that came from X1).

That was my experience. Maybe I was just lucky...

Thanks. The regedit method worked for me.
Pity that I (like many others) spent hours trying to get this working.
And I'm disappointed that Cakewalk have not even acknowledged the issue so far.

Same problem here I need a fix from Cakewalk please. Thanks Jim

Has anyone discovered a repeatable fix for failure of Sonar X1 and 8.5.3 to find Dim Pro 1.5?  Has anyone filed a report with Cakewalk?

I tried the fixes suggested above after getting caught in the loop in attempts to install X1 Producer additional content.  Prior to X1 I had run the 1.5 updater and Properties showed the version as 1.5.  I installed the first 4 parts of the X1 download (including Dim Pro expansion) then got hung up in the loop request to run the 1.5 updater.  

First I tried the hint to run as Administrator both standalone and X1 and did not get a serial number or registration request.  I tried inserting the new registration code in the registry to no avail.  Did a complete uninstall including registry key removal and reload of 1.2 from Sonar 8 and still got caught in the loop, whether running the 1.5 updater before or while trying to install additional content.

Last tried complete uninstall and registry key removal followed by install from the X1 download.  This allowed install of Dim Pro 1.5 and all additional content.  But despite repeated rescanning with and without the standalone location included in the scan paths Dim Pro does not appear in VST Instruments in X1 and 8.5.3 and Dim Pro will not load in projects in either version.  The failure to load/may not be installed properly error appears.

Does anyone have a solution for this issue?