= Troubleshooting =
== Installation issues ==
 * Check the version of Python
 * Check the version of Web2Py that was used for the Sahana release you downloaded
 * Check the permissions of the web2py and Sahana application files
 * Check {{{models/000_config.py}}} connection string to see that it is either sqllite or a valid mysql connection on your machine

== Update issues ==

  * Check the database connection settings in {{{models/000_config.py}}}
  * Clear the /sessions directory - Lingering sessions on your browser can cause issues after an update
  * Clear the /databases directory
  * Drop and Create the database if mysql
  * Restart Web2Py
  * Check the version of Web2Py that was used for the source branch that you merged from  

== Data Migration ==

  * see DataMigration

== IOError: [Errno 13] Permission denied ==

This happens with cygwin patch on Win32.

Solution is to copy the file on filesystem to another name, then delete original & rename back.

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UserGuidelines