Hi John and Dominic,
I am running develop and using ubuntu22_04 so yes according to the installation guide, it is supported.
I found a solution to this, there must have been something that went wrong during the installation as I did not have the OCPI_TARGET_* environment variables set. To fix this I ran source "$OCPI_CDK_DIR/scripts/ocpitarget.sh" "$1".
I am not sure why this wasn’t done correctly by the install-opencpi.sh script on line 119 but doing it manually appears to have fixed it.
Thank you both for your suggestions,
Dan