<remove cmd="msiexec /qn /x{29042B1C-0713-4575-B7CA-5C8E7B0899D4}" />
</package>
</source>
=== If you were beta testing earlier 5.1 versions prior to 5.1.5 ===
install/upgrade of 5.1.5 fails if earlier (eg 5.1.4) version is installed, so we do a remove first by adding these:
<source lang="xml">
<install cmd="msiexec /qn /x{29042B1C-0713-4575-B7CA-5C8E7B0899D4}" ><exit code="0"/><exit code="1605" /></install>
<upgrade cmd="msiexec /qn /x{29042B1C-0713-4575-B7CA-5C8E7B0899D4}" ><exit code="0"/><exit code="1605" /></upgrade>
</source>