# Troubleshooting possible installation and upgrade issues Follow the suggestions in these topics to help resolve common issues associated with installing and upgrading your Pentaho system: * User Console themes render improperly after upgrade * Pentaho Server does not start when installed on a virtual machine * Context XML changes do not take effect after deploying a WAR * No search manager configured for the Java repository * Cannot create Jackrabbit tables in MySQL * Unable to use the database init scripts for PostgreSQL * JBoss fails to start * Not able to login or run transformations * Error when using sample transformations or jobs See the **Administer Pentaho Data Integration and Analytics** document for additional troubleshooting information. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.pentaho.com/install/9.3-install/pentaho-installation-overview-cp/installation-and-upgrade-issues.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.