As I am working away from home for a while I have made a clean install of the latest version of B4A to my laptop together with the 3 resource packages detailed on the 'Products' page. I copied my project files, keystore files and libraries from my PC to appropriate locations on the laptop. Using a portable SSD all the files appear to have copied without error.
On first run of a previously sound project I get a Keystore error on installation. The password is correctly recorded and entered. I have overwritten the keystore files as fresh copies from the SSD. Whilst it is remotely possible the original Keystore file copied to the SSD was corrupt it seems unlikely. Perhaps there is some element of the resources or dependencies that I have missed?