Getting V15 error on initial install !!

[messaging]

Trying to install 3cx v15 evaluation version but can't seem to get beyond a setup error( below). We've tried multiple generated keys, multiple OS versions (Win 7, 8.1 and 10), and can't access Support section or ask for help directly. Errors each time are similar or identical to below.

Anyone have any suggestions on what we should try next ?

System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
at _3CXCloudDBManager.CloudDBManager.RemoveCustomerInternal(String systemId, String tenantId)
at PostInstall.SetupExecutor.CreateCustomerDatabase(CloudDBManager cloudDB, DBConnection masterConnection, Action`1 stateChanged)
at PostInstall.SetupExecutor.CreateDatabase(Action`1 stateChanged)
at PostInstall.SetupExecutor.ExecuteSetup(SetupSettings setupSettings, Action`1 stateChanged)
at PbxWebConfigTool.PbxSetupService.CreatePbxInternal(SetupSettings settings)

Thanks in advance !!

 

[YiannisH_3CX]

Hello @messaging

Please send me a personal message with the keys you have tried installing the PBX so we can have a look.
Also make sure that you are using the latest installer.