I asked this question a month ago and got no response.
Not sure this Forum is actually monitored.

I have a Move File Action in my installer.
Existing File: $CUSTOM_INSTALL_LOG$ (points to /tmp/custom_install.log)
Destination Path: $USER_INSTALL_DIR$$\$$PRODUCT_NAME$_Uninstall$\$Logs$/$

Results in
Move File: Destination:
Status: ERROR
Additional Notes: ERROR - java.lang.NullPointerException

However the file gets moved successfully.

Any idea what is causing this error?