As of Salesforce patch 6.1 our existing test suite is passing 100% on iOS installs.

We have also discussed with our customers that have raised cases with us for this issue and they have confirmed that their applications are now working with no issues on sandboxes.

We ask our customers to please try and install their app via iOS to test this and if there is still an Error Page error, to raise a case with us via support@mobilecaddy.net with the Org details and MobileCaddy package version.