I'm on step "Running project on the Server" from https://developers.google.com/appengine/docs/java/webtoolsplatform#dynamic_web_project and I ran into a problem:
Error occurred during initialization of VM agent library failed to init: instrument Error opening zip file or JAR manifest missing : C:\Program
Another person reported a similar problem here: Error opening zip file or JAR manifest missing : C:/Program. But the solution was for a different set of technologies. I'm using Eclipse, Web Tools Platform, and Google-App-Engine.
Most likely it's because my Java is installed in C:\Program Files, a directory which contains a space. But I'm not sure how to fix this. I’m not sure how to safely move the Java\jre7 directory to a directory without a space in it.
Jordan Fish from Google Cloud Platform Support helped me solve this problem. He said:
As far as the error message when you try to start the dev_appserver, I believe this is probably due to a vm argument in the run configuration for your project. Can you please go to the run configuration (with the project selected, go to the Run menu and select Run Configurations), click on the Arguments tab, and see what is listed in the VM arguments text box?
Here was my original VM arguments:
-javaagent:C:\Program Files\eclipse\plugins\com.google.appengine.eclipse.sdkbundle_1.9.4\appengine-java-sdk-1.9.4\lib\agent\appengine-agent.jar -Xmx512m -Dappengine.fullscan.seconds=5 -Ddatastore.default_high_rep_job_policy_unapplied_job_pct=50
Here is what I changed it to (added double quotes around the directory that's passed as the -javaagent: param):
-javaagent:"C:\Program Files\eclipse\plugins\com.google.appengine.eclipse.sdkbundle_1.9.4\appengine-java-sdk-1.9.4\lib\agent\appengine-agent.jar" -Xmx512m -Dappengine.fullscan.seconds=5 -Ddatastore.default_high_rep_job_policy_unapplied_job_pct=50
This fixed my problem, I was able to complete step "Running project on the Server" from https://developers.google.com/appengine/docs/java/webtoolsplatform#dynamic_web_project