java.lang.UnsupportedClassVersionError about burp-co2

[GoogleCodeExporter]

Is anyone else getting this error?  I can't seem to reproduce it.

Original comment by [email protected] on 14 Mar 2014 at 4:18

[GoogleCodeExporter]

I get this error on Kali using Burp Pro v1.6beta

Original comment by [email protected] on 20 Mar 2014 at 5:35

[GoogleCodeExporter]

Same to. I was fine using Kali 386 but when I switch to x64 is when I started 
getting the error.

Original comment by [email protected] on 25 Mar 2014 at 7:35

[GoogleCodeExporter]

Little more info on the error..

root@kali:~# sudo java -jar ~/Desktop/burp/burpsuite_pro_v1.6beta.jar 
java.lang.NullPointerException
    at burp.yvb.a(Unknown Source)
    at burp.lkc.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:679)

When I loaded the file.

In burp:

java.lang.UnsupportedClassVersionError: burp/BurpExtender : Unsupported 
major.minor version 51.0
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
    at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:266)
    at burp.e0d.a(Unknown Source)
    at burp.e0d.<init>(Unknown Source)
    at burp.l0.a(Unknown Source)
    at burp.lkc.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:679)

Original comment by [email protected] on 25 Mar 2014 at 7:39

[GoogleCodeExporter]

Using burpsuite_free_v1.6.jar on Kali 1.0.7 (32 bit).
Default java version from kali distro was "1.6.0_31"

Initially I got the Unsupported major.minor version 51.0 error listed above.
Updated Java version to "1.7.0_55" solved the problem for me.

Original comment by [email protected] on 23 Jun 2014 at 6:02

[GoogleCodeExporter]

It looks like a Java version upgrade resolves the issue.  Oddly the stack trace 
doesn't even enter CO2 code so this is some library Burp is/was using.

Original comment by [email protected] on 8 Aug 2014 at 12:00

• Changed state: WontFix