Rob,
The thing with DNN in general is that its compatibility with UltiDev Cassini varies a lot from one DNN release to another. Supporting DNN is pretty hard for us because it keeps being a moving target.
We have recently attempted to help another person with DNN 4.5.3 build and it was not successful. We ran into too many issues to continue working through them.
We recommend letting DNN developers know that they may want to test the product with UltiDev Cassini.
This all notwithstanding, could you please provide the value of the SQL connection string from DNN's .config file?
Best regards,
UltiDev Team.
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