01-27-2011, 03:11 AM
My best guess is that you don't have enough free memory in Windows 7 so that's why the JVM is unable to allocate enough memory for the 1024MB heap. Check whether your PC has too many services and apps running in the background which are eating up all the memory. You can use msconfig to disable unneeded services and background apps. If you don't want to do that, try lowering the heap memory size for Jpcsp. Open the start-windows-x86.bat file with notepad and change the -Xmx1024m line to -Xmx768m. If it still won't run, gradually decrease the number until it runs but don't go below 512m. If it still won't run with -Xmx512m then your Windows has a serious issue with free memory that needs to be fixed, perhaps some malware is running on your PC which is eating up all the free memory.