MyEclipse "Building workspace has encountered a problem" error while loading project

when MyEclipse loads the project, " Building Workspace has encountered a problem" error, this is a recompilation error,

① According to the MyEclipse menu bar project-"Propertise (when the project is running or loading propertise gray, not available)-" builders-"Do not select JavaScript Validator ( Remove the front hook).

② or re-swap a namespace (workspace).

2, when the MyEclipse run the program, Pop-up window error:could not find the main class:test.program would exit, which is caused by inconsistent Java compiler and JRE version .

Workaround:

L View Java Compiler version: MyEclipse Select Project (Project)->>propertise->>java Compiler

L View JRE version: MyEclipse Select Project (Project)->>propertise->>java Build Path->>libraries->>jre System Library

Change the version of Java Compiler and JRE to match.

MyEclipse "Building workspace has encountered a problem" error while loading project