Affirmative, I used the above procedure to unmount the SD card.
The apk you sent worked fine and I confirmed that it says "version 2.6.8.2" on the help page.
Thanks for the quality support as is usual.
Ciao
https://soundcloud.com/digidirt

The Demo installed without a problem.
I currently have 2.68a and it's not installed on the Sd card.
I think I installed it after the mod via a market update.
The mod is based on jellybean 4.2.
Updating or Uninstalling and reinstalling (with SD card removed)didn't solve the problem.

tried your suggestion, but it didn't change anything: still get the same error message

Hi, Thanks for the prompt response. The problem is definitely not space as I have over 70% free storage space on internal(16gb) and over 90% free on ext SD card(8gb). Since it's a "nexus update", I'll stick to the version that works for now but I hope major updates won't give me issues in ...

I get an error message saying "couldn't install on USB storage or SD card."
System: Mediacom Smartpad 860s2 running CyanogenMod 10.2