I am running PA 1.6.1 from my flash drive which has write protect switch. When I try to eject the flash drive using the eject button in the PA menu, it gives me a error:
Unable to write to K:\Portableapps\PortableApps.com\Data\PortableAppsMenu.ini.
Then if I click on the the tray icon for PA, it opens, but if I click outside of PA onto another window or desktop (basically, make PA lose focus as main application), then I get the same error. If I try to close PA using the close button in the menu, it gives me the same error again. I have to go into task manager and terminate the PortableAppsMenu.exe entry.
Running Windows XP Home SP3.
EDIT: Totally forgot to mention that this is when it's set as write protected. Works fine when it's not.
I talked with Chris Morgan in IRC and he said that it should normally work when running from write-protected media.