MyEclipse operation error after introduction of project

An internal error occurred during:launching efax on Tomcat 7.x. Project Run times wrong

Because your project was built with a tomcat5.x server, now the project is not tomcat5.x, you have to change the server to 7.x or more version will not be error
Specific measures:
Project Right-->buildpath--Configure Build Path--double-click JRE system.library[jdk .... -->alternate JRE--Select the JDK directory you have installed natively.
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MyEclipse An internal error occurred during: "Processing Dirty regions". Problem-handling methods
When editing a JSP Web page with eclipse3.7.2+myeclipse8.5, there will be a pop-up box, content:


An internal error occurred during: "Processing Dirty regions".
Org/eclipse/wst/sse/ui/internal/reconcile/validator/validationhelper
Google a bit, and found that this is due to myeclipse and Eclipse components Or.eclipse.wst.sse.ui version conflict caused.

The workaround is as follows: Find the file or.eclipse.wst.sse.ui_1.0 in the Eclipse directory ... Move to another location or delete.

Click on a JDK under the corresponding version of Window>preferences>myeclipse Enterprise workbench->servers->tomcat->.
Find the location where you installed Tomcat, and there is the Tomcate server in that page to change the enable to disable should be OK, here should be careful, hope to you useful