Ok,
I rebuilt all the certificates and provisioning files.
I am supposed to be signing a distribution mobile provision file with a distribution certificate, right?
The development one works, but that is because have provisioned this file.
Could it be the bundle version?
<plist version="1.0">
<dict>
<key>items</key><array>
<dict>
<key>assets</key><key>metadata</key>
<dict>
<key>bundle-identifier</key><string>com.k2snowboarding.f16</string>
<key>bundle-version</key>
<string>2015.3.000</string>
<key>kind</key>
<string>software</string>
<key>title</key>
<string>Enterprise Viewer</string>
</dict>
</dict>
</array>
</dict>
</plist>