Right now, when I try to persist an object in Google App Engine, I’m facing the error “Java.lang.VerifyError: Expecting a stackmap frame at branch target“. I’m using JDK 7 and it seems like the problem lies with this JDK.
After googling a bit, I found that there seems to be two solutions to fix this problem.
Solution 1: Change to JDK 6
As simple as is, change your JDK to version 6 and you won’t be bugged by this exception anymore. Well, in my case, I have to use JDK 7. So, moving on to the solution 2.
Solution 2: Configure JVM
Go to Windows -> Preferences -> Installed JREs. Select the default JVM and click edit. Then add this parameter as VM argument “-XX:-UseSplitVerifier” as seen below.
This should solve the issue.
Hi! I'm Veera Sundar. I am a web application developer. I usually build the application end-to-end using Java on the back-end and JavaScript on the front end. 
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Hi,
If I am not mistaken, you are hitting an Eclipse bug:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=362591
A patch exists in the bug report. I have applied the patch on the relevant JAR file of my Eclipse 3.7.1 and so far everything seems to work fine.
Hope this helps,
-Christopher