Build error

After upgrading tot 7.02 and updating all APP modules to last version I get this error.... I dont know yet where to start to fix it

clues?

Buildfile: C:\Users\arthur\Documents\Mendix\KWALE-main_6\deployment\build_core.xml

compile:
    [javac] Compiling 294 source files to C:\Users\arthur\Documents\Mendix\KWALE-main_6\deployment\run\bin
    [javac] C:\Users\arthur\Documents\Mendix\KWALE-main_6\javasource\communitycommons\Misc.java:656: error: unreported exception COSVisitorException; must be caught or declared to be thrown
    [javac]         overlay.overlay(new HashMap<Integer, String>()).save(baos);
    [javac]                                                             ^
    [javac] Note: Some input files use or override a deprecated API.
    [javac] Note: Recompile with -Xlint:deprecation for details.
    [javac] 1 error