JW01, I've done some researching on your issue, most everything I can find leads to security issues (infections). Though this isn't a 100% certainty, it's what I'm discovering from others with the issue in quotes above.
“Runtime error! R6002 – floating point support not loaded”
What type of security are you running on these OS's & how often are you scanning the system(s)? I realize that the primary issue is on XP, but you also note this occurs on Windows 7. Meaning that there's something going on to cause these errors. It's best to have active AV & AM (anti-malware) protection, while many runs AV scans, just as many doesn't bother running AM ones.
Malwarebytes Anti-Malware is an example of a good Premium one, and it's also offered in a Free version with a 14 day Trial of the Premium features.
As to AV software, there are many choices, with XP a good one is needed, as with every passing month, there are items getting security updates & patches on Vista & above that are now ignored on XP systems. Being that the same thing is going on with Windows 7, it appears as though your security is letting you down. The sharing of Flash & backup drives between the two OS's doesn't help either, neither does sharing a Data partition if on the same computer, if this is taking place. Like for if a piece of software (or a few) is updated on Windows 7, you download these, transfer to a Flash drive, connect it to XP, bring it back to Windows 7, that's an easy way to get the formerly clean OS infected. Or sharing any files between the OS's.
Lets get a snapshot of your system, if you will, the XP one, since this is the XP section. Speccy can help to tell us some things about your OS, though further diagnostic tests may be needed. It's a starting point. Here's how to post that snapshot.
- Go to Piriform's website, and click the big button.
- Next, click Download from Piriform.com (the FileHippo link requires an extra click). Or if you want to use a portable version of Speccy (which doesn't require installation), click the builds page link and download the portable version.
- You will now be asked where you want to save the file. The best place to put it is the Desktop, as it will be easy to find later.
- After the file finishes downloading, you are ready to run Speccy. If you downloaded the installer, simply double-click on it and follow the prompts until installation is complete. If you downloaded the portable version, you will need to unzip it before use. Right-click the ZIP file and click Extract all. Click Next. Open up the extracted folder and double-click on Speccy.
- Once inside Speccy, it will look similar to this (with your computer's specifications, of course):
- Now, at the top, click File > Publish Snapshot
- You will see the following prompt:
- Click Yes > then Copy to Clipboard
- Now, once you are back in the forum topic you are posting in, click the button. Right-click in the empty space of the Reply box and click Paste. Then, click Add Reply below the Reply box.
- Congrats! You have just posted your specs!
Please provide this information & we'll take it from there.
We look forward to your response & hopefully can get this nailed down.
All the Best,