A critical error has occurred. Selection out of range Parameter name: value
we need some more detail please - can you post the full stack trace from admin->event viewer
note: I believe this is the same issue discussed at http://www.dnnsoftware.com/answers/selection-out-of-range-parameter-name-value/?page=1
This is a duplicate entry for https://dnntracker.atlassian.net/browse/DNN-5445
Fixed in 7.3.3
A workaround can be found here:
http://www.dnnsoftware.com/answers/selection-out-of-range-parameter-name-value/?page=1