invalid signature file

i trying arduino.1.6.4 run, after initializing packages popup window with
"invalid signature file digest manifest main attributes"

and in console output get

code: [select]

pi@brpi ~ $ arduino
java.lang.securityexception: invalid signature file digest manifest main attributes
at sun.security.util.signaturefileverifier.processimpl(signaturefileverifier.java:287)
at sun.security.util.signaturefileverifier.process(signaturefileverifier.java:240)
at java.util.jar.jarverifier.processentry(jarverifier.java:317)
at java.util.jar.jarverifier.update(jarverifier.java:228)
at java.util.jar.jarfile.initializeverifier(jarfile.java:348)
at java.util.jar.jarfile.getinputstream(jarfile.java:415)
at sun.misc.urlclasspath$jarloader$2.getinputstream(urlclasspath.java:775)
at sun.misc.resource.cachedinputstream(resource.java:77)
at sun.misc.resource.getbytebuffer(resource.java:160)
at java.net.urlclassloader.defineclass(urlclassloader.java:436)
at java.net.urlclassloader.access$100(urlclassloader.java:71)
at java.net.urlclassloader$1.run(urlclassloader.java:361)
at java.net.urlclassloader$1.run(urlclassloader.java:355)
at java.security.accesscontroller.doprivileged(native method)
at java.net.urlclassloader.findclass(urlclassloader.java:354)
at java.lang.classloader.loadclass(classloader.java:425)
at sun.misc.launcher$appclassloader.loadclass(launcher.java:308)
at java.lang.classloader.loadclass(classloader.java:358)
at cc.arduino.contributions.packages.contributionsindexer.issigned(contributionsindexer.java:153)
at cc.arduino.contributions.packages.contributionsindexer.parseindex(contributionsindexer.java:73)
at processing.app.basenogui.initpackages(basenogui.java:600)
at processing.app.base.<init>(base.java:271)
at processing.app.base.guardedmain(base.java:215)
at processing.app.base.main(base.java:128)
cc.arduino.contributions.signatureverificationfailedexception: package_index.json file signature verification failed
at cc.arduino.contributions.packages.contributionsindexer.parseindex(contributionsindexer.java:74)
at processing.app.basenogui.initpackages(basenogui.java:600)
at processing.app.base.<init>(base.java:271)
at processing.app.base.guardedmain(base.java:215)
at processing.app.base.main(base.java:128)
pi@brpi ~ $

any idea's on wrong or how past ??


thankz
have great day
shortie

i getting different similar message (which no longer have in scroll-back) invalid  json file signature. it's spooky went away when moved away arduino-1.6.4 directory , re-extracted. though, far can tell, there no difference between old , new directories. may have burnt sage.

pix

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