when i convert to maven project the error is :
> An internal error occurred during: \"Updating Maven Project\".
> Unsupported IClasspathEntry kind=4
Here is what worked for me: After the steps posted in Answer 21 above (the last being Convert to Maven Project), I did:
mvn eclipse:eclipse
- this regenerates your .project and .classpath files (both of which were blown away by mvn eclipse:clean
in step (2) above)
In Eclipse, I right-clicked my project(s) and then Maven > Update Project
I did not see the Unsupported IClasspathEntry kind=4
message anymore :)