We replaced our 70 with a 918 running 5.0 about a year ago and continued using PowerHouse 5.26 without any problems. I did have a problem with Architect using QDD under 5.26 so upgraded it to 7.29, which was a very simple move.
I have recently installed 5.5 and am now upgrading to PH 7.29 and PHD, so far without any but minor problems, 7.29 is more fussy about syntax!
Tony Knowles
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