MSN Messenger 7.5: "not enough storage is available to complete this operation"

So, whenever I try to run MSN Messenger 7.5 (escargot patched) I just get this error message even though last year it was working:

“The following error has caused MSN Messenger to close: not enough storage is available to complete this operation.”

I have tried tinkering with my VRAM settings, even turning them off completely. I’ve tried restarting and only opening MSN once Windows loads. Nothing has helped, my drives aren’t full and currently only 6 GBs of RAM are being used so I don’t know what’s causing it. I’ve tried reinstalling/repairing it too and deleting the “MSN Messenger” folder in AppData/Roaming.

MSN Messenger 7.5

Windows 7 Ultimate 64-bit