Jimisola,
This issue is caused by installing Eclipse / MyEclipse as one user and then running as a different user on Linux while using our 30-day trial. Once you subscribe, that configuration is supported, but for the trial on Linux, you should really install and run under the same user account to avoid any problems. On the other hand, if it seems to be behaving now and Window > Preferences > MyEclipse > Subscription shows a valid 30-day expiration date you might be “good to go” as is.