We found that the Java Runtime Environment (JRE) that OpenOffice installed to the OS could be conflicting to the JRE bundled in the CMS3 installer. To solve, please follow these steps:
1. Right click My Computer > Properties > Advanced > Environment Variables > System variables.
2. Choose Path, then click Edit.
3. Find "C:\Program Files\Java\jdk1.6.0_13\bin\".
4. Cut and paste the above path to the front. (Please delimit the paths with semi-colon)
5. Click OK 3 times.
6. Start up the tomcat.
If problem does not solve, update to the latest JRE. You may download the latest JRE from http://java.sun.com/javase/downloads/