Hello!
I noticed that OpenPackage won't work when the user is a standard user without writing(admin) permissions. We solved it by copying the package to "My Docs", but it really is a messy necessary step when we just want to read from package and not write to it.
We stored 350mb of files in a package and it hurts to move it to My Documents each time we want to read from it.
Log for a user with standard permissions:
06-13-2011 15:10:11 | PACKAGE_MANAGER : Opening Package 'C:\Program Files (x86)\...\Acerno.lvl'.
06-13-2011 15:10:11 | STREAM MANAGER : Couldn't open file 'C:\Program Files (x86)\...\Acerno.lvl' for read/write
06-13-2011 15:10:11 | PACKAGE_MANAGER : Unable to find package 'C:\Program Files (x86)\...\Acerno.lvl'.
Note: It will find the package with write-permissions.