Thank you. I already did that and it makes no difference. Same with running from the command line--I set CATALINA_HOME and JAVA_HOME and I still get this error:
/home/dante/IdeaProjects/cpas/modules/build.xml:447: Class org.apache.jasper.JspC doesn't support the "compilertargetvm" attribute.

(And in IDEA I still can't get past the first error I posted about, though I have contacted IntelliJ support about that).

Thanks