How do you have the scope set up? I have only tested it with the 2204A but assuming the 'picoscope.com' utility runs with all models of scope there should be no issue.
As it stands, the setup needs to be quite specific (as detailed on my home page) in that you should have two measurements setup, and that the top one (I think that's the first one you setup) should be frequency, and the bottom one true rms.
I am aware of an issue that I fixed today, and have now released version 1.7
, which hopefully irons out the problems I saw.
Once I'm back at my 'proper' PC (tomorrow now) I'll see if I can find out what it causing the problem you're having.
"System.IndexOutOfRangeException: Index was outside the bounds of the array." suggests to me that either no (or incorrect for my app) measurement data was returned.
Please try the updated version 1.7 and let me know if you still experience the same issue?
Also - if you still have problems, please post the output of 'picoscope.com /a Measurements.CSV?' from a dos prompt, or alternately save your session in a .psdata file and email that to me.
As stated in my posts above (and on my site) - my app is targeted very specifically at capturing two measurements only (in the current version). If demand warrants it, I can add additional measurement vectors, or possibly make it more customisable in a future version.
I have also upload two .psdata sample files which will (should!) provide the correct settings to use PicoScope with PicoMeasure. They can be download from my home page.