We recently discovered that the Tomcat team made a change in their most recent 7.x release, 7.0.64, that breaks our build of LabkeyServerBootstrapClassLoader. (They changed WebappClassLoader to implement a new interface, InstrumentableClassLoader, which hasn't been on our classpath; more details here.) Fortunately, the fix was easy and has been pushed to the release15.2 and modules15.2 branches; sync up to the latest changes there if you need to.

This is only relevant if you're building one of these branches against the very latest Tomcat release. (Trunk is not affected, since we already addressed this issue as part of our 15.3 Tomcat 8 support work.)

Thanks to Jon Richardson of University of Wisconsin for pointing out the problem at the LabKey User Conference last week.

Adam