Yeah... when I was making the installer, I think I may have bypassed the 1.50 bit. (You may have seen in flash when installing piKey)
So, in that case, you may have to add the line yourself.
Create a file:
ms0:/SEPlugins/Game150.txt
And add to it
ms0:/SEPlugins/piKey.PRX
That will enable it in Game150 mode.
The reason why I did this was to show my view on the 1.50 kernel. I think it should be scrapped with. Nobody codes in the 1.50 kernal anymore and for those who have 1.50 homebrew, there is eLoader by Noobz.
NOTE: If anybody has 1.50 homebrew WITH the source code, I'll be happy to port it to the 3.XX+ kernel. It will run quicker and will run on slims too.
Angelo