This knowledge base article addresses the main reason the up.time Windows installer fails during the MySQL portion of the installation.  

Aside from an error during the installation, another symptom that the installation has failed while trying to install MySQL is that the up.time Data Store service will fail to start, producing an error.  The installation of MySQL occurs before the up.time Controller, so when the installer fails on MySQL, the Controller does not get installed either.

The common reason the up.time installer fails during the MySQL portion is that the Windows setting disable8dot3 is set to something other than the default, 2.  For a general explanation of what the disable8dot3 setting does, see http://support.microsoft.com/kb/121007.  The MySQL (up.time Data Store) service requires that disable8dot3 be set to 2.  To resolve for up.time, follow these steps:

1. Verify that disable8dot3 is indeed set to something other than the default 2.

fsutil behavior query disable8dot3

2. Set disable8dot3 back to 2.

fsutil behavior set disable8dot3 2

3. Uninstall the incomplete installation of up.time.

4. Run the up.time installer again.