Photoshop will not open/create new files, cannot resize images etc

Question

Hi to all.
So I'll start with the basics; I am using Photoshop 7 (And yes, I am using it for a specific reason, I'm not interested in migrating to this new $1000 Creative Cloud rubbish), us Australians are getting ripped a new one and I'm happy with the $50 I paid for my copy years ago. (Please do not tell me the answer to my problems is to simply upgrade and go bankrupt. Again, I've been using 7 for a very long time without issue).
I've been using 7 for almost a decade without issue. I stick with it because so far, it's done everything I need, has been reliable up to this point, and my plugins do not work properly with newer versions. I'm also running an older-spec system (Windows XP, 3gb ram etc) as I do a lot of work with older game engines, Source Engine etc.
The issue I'm having doesn't appear to be Photoshop-7 specific however, there are many threads on this that have gone unanswered, and happen in CS3 etc and modern copies as well. I have uninstalled and reinstalled it to no avail. Basically, I cannot open files reliably with it.
If I right click any image file in explorer and click "open with -> Photoshop", photoshop will launch, however it does not open the file. I double checked to ensure the file was not just opening offscreen, however it is definitely not opening at all (as the "close" option does not become available).
If I launch photoshop manually, and click file -> open -> It will open that file, HOWEVER it will not open any more files after that.
It also is very very fickle with simple commands, such as if I hit CTRL + T to go into transform mode and then try to rescale an image, I have to click and drag the corners at least 5-6 times before it will recognize that I am doing so, and it will also ignore the resize that I perform and snap back to normal. Sometimes I have to click things more than once to get them to register. This is not occurring with any other piece of software etc, so I've ruled out that it's an issue with my mouse.
This has only been happening a day, and I cannot think of any particular system changes likely to result in this (ie no abnormal plugins installed recently, no major hardware or software changes). Unless my keyboard has a stuck key or something strange, I'm absolutely at a loss
Is there anyone who can help me, or has heard of this issue?

Answer 1

I am an idiot.
I guess the scratch disk was full or something else. A simple reboot appears to have solved the problem. (I often have my system running for up to 48-64 hours at a time without reboots) as my workdays are around 36 hours at a time, so it could just be a memory constraint from XP.
Hopefully this solves the issue for anyone else who encounters it. Reboot your pc once in a while, give it a clean slate of memory to work with.