PCI Express SOPC flow hardware ready example with README

Has anyone had issues with PC hanging and require power cycle when using SOPC based PCIe Hard IP core? Our own PCIe driver installs but if we try to disable the driver, the PC hangs. The same driver doesn't hang when disabling/enabling/uninstall for Altera's PCIe_hiperf_a2gx builds. However, Altera didn't use SOPC for their hiperf demos. I am using the Arria II GX 125k dev board. Also, Jungo created .inf files hang the PC during install with SOPC based PCIe, but exhibit no problems with Altera's hiperf demos. We can read and write to regs in our SOPC version with Jungos GUI and all seems to work fine except when trying to change the driver.