I downloaded the trial version of X3 Producer a few months ago, and just got around to trying to install it. It's from January, so I guess it's version X3d.
 
No-go - it gets as far as the Arpeggiator data and then starts trying to install to a completely invalid path. Being stubborn, I clicked Ignore, figuring I could fix it up later. I got the message for the next pattern, then the next... after about 5 minutes of clicking, it moved on from Arpeggiator patterns to CAL scripts and it became plain that almost nothing was going to end up installed properly so I cancelled.
 

 
I am installing alongside Sonar 8.5, but I don't see why that should affect this installation. I don't have a C:\Cakewalk Content directory and never have (not that this path would have worked if I did).
 
I don't suppose there's anything I can do about this, is there? Is there an X3e version of the trial where this might have been fixed? I don't see anything promising in the changelog.

It is recommended that downloading Sonar, whatever version, is done using a browser with a built-in download manager, such as Chrome, or a dedicated download manager.
 
Further, you may have corrupted download files - there are freeware hash value generators available, and Cakewalk lists the correct hash values for each of the download files for Sonar, and you can compare them to make sure the downloads were done properly.
 
Additionally, I found that my antivirus software created corrupted files during the download of X2, and I had to temporarily suspend my antivirus software to get a valid set of download files for Sonar.
 
And, for the installation 2 things: 1st, I recommend you right-click on the install program for Sonar and click on Run As Administrator, and 2nd, I also recommend you temporarily suspend your antivirus software during the Sonar installation.
 
Bob Bone
 

I forgot to add that there is no issue whatsoever with retaining 8.5.3 or whatever prior versions of Sonar you wish to keep along with X1, X2, X3, or any other future release.
 
Bob Bone
 
 

I think I saw this comment in another thread about the demo, but it did not click until I saw your screen capture... A colon (:) is not allowable in a directory path... and that is where it is hanging on you. Can you do the install and "customize" that directory path? "C:\Cakewalk ContentC:" is a "no go"... if possible, reinstall and choose "specify directory" (or similar), and check all of those path names.

I thought maybe the Sonar install program had messed it up, but I suppose the OP could have inadvertently set the path to that invalid value.  It looks like that C: at the end was/is the beginning of another specification of drive.
 
Bob Bone
 

What OS are you on?
 
Run the Installer as "administrator", that might clear it up, or as others have said, could be a corrupt download.

I think its not the colon but the second C with the colon. It should be C:\Cakewalk Content

It seems to be working running as administrator, though it's obviously installing to C:\Cakewalk Content, which is the wrong place for apps to install data these days. I didn't get any say in the paths, which makes it even more important that the installer should be getting it right in the first place. Not impressed.

Are you running a custom install? You can change paths there.
 
My path of c:\cakewalk content is the arps, fx chains, templates etc.... But thats where it is supposed to default.
 
The actual .exe will go in c:\program files for 64 bit and c:\program files (x86) for 32 bit.

Btw, I have UAC in Windows disabled, its a pain in the ass. If you arent a novice then disable UAC.