Glyn, I install everything I can on other drives now. This is my concern- I do not know why I have all this space disappeared. I did all procedures Windows offer to free space already- emptied Recycle bin, deleted temporary files and so on. Even checked memory allocation space- only 2.5 Gb. I am missing space. Same happened on my lap top soon as I installed Sonar 8 back in the day- it had one of first 120 Gb SSDs and it went down to 60 Gb.

1.  If you uninstall X2, make sure you don't need V-Vocal, because it went away with X3.  There are a couple of other things that went bye bye, but I am too tired to think of what they are.  You can check the Cakewalk site for the page that lists all the included plugins for X3, and that will tell you what you would potentially lose by removing X2.  If an X2 plugin is not part of the basic install, it won't go away, but V-Vocal will definitely go away.  Melodyne from X3 does a really good job for me anyway, so I don't happen to miss V-Vocal, but some folks prefer it over Melodyne.
 
2.  Check your Windows Page File size - sometimes that can be really big.  I cannot guide you on how to optimize it, but others here can provide that info.
 
3.  If you buy a larger drive, you can CLONE your existing SSD to the new drive, as long as the new drive is the same size or bigger than the one you are cloning.  When you clone your primary drive (C: drive), the new drive will have an EXACT copy of whatever was on your original C: drive, and then it will also have however much free space there is - AND your programs will not know the difference and will simply continue to run.  Many SSD's come with certificates for downloading a free copy of good cloning software.  I JUST went through this a few days ago.  No problem to clone a drive whatsoever - it just works.
 
4.  Where do you have your Cakewalk Projects folder located?  You might consider housing it on a different drive than your primary drive (your SSD that is filling up) - copy/paste it to a different drive, then go into Sonar Preferences and point Sonar to the new location for the Cakewalk Projects folder.  I have things set that way for multiple computers here, and everything loads and plays just fine with that configuration.  That will free up a ton of space, IF you were running with your Cakewalk Projects folder on your SSD with the OS and the applications.
 
5.  Some of the Cakewalk-supplied plugins, and actually others too, by default store their sound files/folders in either program data or in sub-folders in the Programs folder.  During installation, you MAY be given the means of choosing a different path for the data files/folders, OR some programs have Options dialog boxes or otherwise simply display the folder where you could alter that path to a new location.
 
I hope some of the above helps you, 
 
Bob Bone
 

Hey, Bob
My paging is 2.5 Gb. I will leave it at that.
 
Project files folder is empty- I dont use it.
 
I can not find anything that would fill 200 Gb of space. Even Cakewalk folder says it is 13 Gb but sum of folders inside is something 6 Gb.
 
Cloning drives- even Windows and chipset- everything? Hmmm... yeah, I know it can be done... I like to figure out where my space goes. As stated in earlier post- I hardly have 70 Gb of data spread on 189 Gb of SSD now. I need to have it detect reasonable size. I may just install that software I posted link for, even tho it looks like malware- I just currious where the space is going.

I had a similar problem with the system drive filling up on my work laptop and IT used TreeSize to find the offending folders.
http://www.symantec.com/connect/downloads/treesize-free-disk-space-analyzer
 

Glyn Barnes
I had a similar problem with the system drive filling up on my work laptop and IT used TreeSize to find the offending folders.
http://www.symantec.com/connect/downloads/treesize-free-disk-space-analyzer
 

A most valuable tool !  Something like it should be part of Windows instead of having to Properties every folder by hand.   TreeSize has helped me on several occasions.
 
Remember to clear out the wastebaskets, temp and download folders !  They can get huge.
 
Here's the official webpage :  http://www.jam-software.com/treesize_free/

Thank you for all replies and software suggestion. I installed it and it did show me all the folders, and it says- there is no space loss. The main offender and space taker is Native Instruments and Maschine libraries. When I was installing NI, I told it to install on other drives, but it still managed to install their tentacles everywhere. The sounds and libraries are under Users/Public folders. And many other software synth libraries are there even through I was trying not to install on C. I thought I have enough experience with this. Back in a day when hard drives were small- I was always running out of space and then had to install everything on other drives. This time I did everything I could not to install on C, and it all there. Ugh. Looks like I may be rebuilding this system again when Windows 10 are released.
 
Recently I saw some indie developer posted Utility software on KVR that can move Native Instruments tentacles on other drives. I thought, "That is nice, I could use it..." and then I did not download. But NI is very sensitive with moving. It's updates will not install if they are not where it thinks it should be, and removing NI is near-impossible. I had to manually take it Maschine controller parts out of the registry and use Windows Fix it because it would fail to uninstall. And I have Komplete 10 upgrade sitting on my desk for 4 months. Keep contacting NI tech support asking how to install and they would not reply...

I have Avid folder. I do not use Avid products. I guess I installed AAX plugins extensions along with VST for Protools, thinking I may need it one day. Can I delete this folder- it is 1.7 Gb.?

I have IK Multimedia folder that is 30 Gb. This is my fault- I let it install there- did not realize it will be 30 Gb. Sonic Synth 2, Miroslav Philharmonic, Sample Tron, Sample Tank 2.5 and other similar products. I now have Sample Tank 3. I do not need ST 2.5. But I dont know if it would uninstall smoothly- it is at least 6 Gb...

scook has posted many times about the mklink Windows command that can help you move stuff around without screwing things up. I recently did some more research on that and it essentially creates a shortcut to the new location(s) so instead of screwing around trying to figure out how to switch your directory paths manually all the time the mklink thing just takes a search for something on the original drive then pulls it up from the new location.
 
At least I think that is how it works (if not my apologies). It sounds pretty much perfect for this type of thing.
 
Sorry I don't have those threads bookmarked on this machine but a google search of the forum should bring up his posts and a general search for mklink will bring up the Microsoft pages on the subject.