When searching for step elements (the Find Selected Step Elements option is selected) and multiple procedure sets are selected, but the procedure sets use different formats, PROMS puts a message in the Results area that says "folders selected contain multiple formats". Need to expand this messaging to provide more clear information regarding which formats are causing the issue, so that they can more easily decide which sets to de-select rather than doing so randomly. There is also a refresh issue where deselecting everything, it will not always refresh properly.
