I do not think, installer have reached till validating the jboss version with reference to the attached error screen shot.
It seems installer has failed to validate Jboss path.
We need to pass the base path of the Jboss in the installer i.e for reference please check if /bin folder and "jar-versions.xml" are available under the path you have specified.
Installer will pop up the invalid version error message incase version does not match the required/supported version.
Were you able to successfully use EAP 7.x for BPM?
My understanding is, JBoss EAP version we support is 5.2 not 7.x, if there is not properly documented Tech Support can create and publish an kbase article, also can make a request to add it to the documentation set.
Yes, I understand it is not the supported with 5.2, but i wanted to check if anyone else has tried using EAP 7.x for BPM. EAP 5.2 is old and uses JDK 1.7