Error: Could not find or load main class

[Anonymous]

 jdk environment is totally correct. than also this error is coming.
after changing workspace it use to work but once the error occurred, It again and again shows it. 

[Anonymous]

Hi,
The error "Could not find or load main class" is usually caused the blank space or special characters in the installation path ( especially in your workspace).
Best regards
Sabrina

[Anonymous]

The JDK settings are saved within the workspace. If it worked before check this settings again.
Which OS do you run?
On a Mac please follow this advice:
http://jan-lolling.de/talend/howtos/mac_jre_settings/set-jdk-for-talend-open-studio-on-a-mac.html

[Anonymous]

I am using window7. Jdk path is also correct.

[Anonymous]

Going through the same problem it's showing error in the Archeive file

[Anonymous]

"Archive for required library: 'G:/Talend/TOS_BD-20151214_1327-V6.1.1/configuration/.m2/repository/org/talend/libraries/emr-metrics-client-2.0.0/6.0.0-SNAPSHOT/emr-metrics-client-2.0.0-6.0.0-SNAPSHOT.jar' in project '.Java' cannot be read or is not a valid ZIP file"
This is the error I am getting because of which I am not able to run the project.
Please suggest the solution

[Anonymous]

Hi,
Is your network Ok with you? Can you successfully install additional talend packages in studio?
Can you please upload the log message? Which is located in <Talend Studio installation path>/workspace/.metadata/.log 
Best regards
Sabrina