Sorry to hear of your problem. AFAIK LR, at least on my system, always creates a new catalog if I so chose to do so.
The only time it can't is if you are trying to create it on/in a drive/folder that the OS has restricted, No Write access. If you are using a Mac OS X can do this at random for no good reason.
Best of luck to you.
I'm using windows 8 and I have tried to create them on two different hard drives and sometimes it works and sometimes it doesn't. How can I get a hold of adobe?
I don't have a phone number for you. But why are you creating so many catalogs? One catalog can usually handle just about everything.
When I tried using more than one catalog file I always created the additional catalog in the same top level folder as the others. I keep my catalog file on my D:\ drive in a top level folder called Lightroom 6 (even though I am using the CC version) Catalog. In that folder I have a catalog file named Lightroom 6 Catalog and a Previews folder named Lightroom 6 Catalog Previews.lrdata. I opened LR and click on the File menu item and selected New Catalog. The Create new catalog window opened, I Browsed to the Lightroom 6 Catalog folder and clicked on it. I then typed in a name to call the new catalog. I used New Cat Test and then clicked the Create button. In that Top Level Lightroom 6 Catalog folder a new folder name New Cat Test was created and in that folder is another folder named New Cat Test Previews.lrdata and a File named New Cat Test.lrcat.
You are doing something wrong or you are trying to create a catalog in a folder, drive, that your username does not have access to. Or there is something wrong with your computer and or the Windows install on your computer. But I am leaning towards a Permissions problem with the drive or folder you are trying to create these new catalog in
Also the LR catalog can not be on a Networked drive even if you have Mapped a drive letter to it. It must be on a Locally attached drive either internal or external.
The Specialist you might talk to, if you ever get to talk to one, will tell you the same thing. Honestly other than a very few Adobe employees there are people on this forum that know more about LR than most anyone that works at Adobe.
The Catalog file and the Previews folder are empty until you import images it to the catalog. So there is no reason for LR to not create as many new as you like. I just created another without any problems
Sorry I have no idea how to contact Adobe.
I was finding the one catalog was getting bogged down with so many photos
The catalog file is just a database file. There are many that have 10s 100s of thousand images all in one catalog without any slow down of LR. I myself only have about 16000 images in my catalog. I don't see any slowdown with the program. I do use a folder structure that places images in folder by the Shot date in higher level folders by years. I then use both Collections and Keywords to separate images. A collection and a keyword can have images from any of the years and any of the folder in those years. Then I have collections for just projects but all my images are all in one catalog.
There must be something else contributing to the poor performance on your computer. The catalog probably is not going to contribute to the problem. Having many different catalogs is going to really make managing your image library difficult. Less about your computer system, Mac or PC, how much RAM, how much free disk space, your exact version of Lightroom, the camera make and model that you are using.