If there is a really good Arduino Simulator out there, then that will be time to stop.
Thanks for the sketch. Even though it is fairly simple, it showed up lots of issues, but v0.90 now seems to handle it OK. We ran through all the Basics and Digital examples and they all look good now. One of the sketches had a floating point number so we just converted it to an integer for the present. The Analog examples have some double for loops and a map() function I have never heard of before. With the Tone function, we were going to simulate the Tone using the windows function WindowsBeep(freq,duration) but this seems to have disappeared in Windows 7, but it is still on the backburner.
Some other changes are some major rework on the screen layout. The basic screen has the program list on the left, the variables and the Uno picture which reflects input, dataU and output. There is an Option | Swap to revert to he previous screen setup. We also added an Edit option to allow the program to be edited and then reloaded or saved to an external file. The Analog window now does some freaky resizing to make it smaller.
With the freebie version, it is identical to the main version with the addition of delays. We toyed with having the free version as an older release but figured this wasn't fair (or annoying enough).
Thanks again for the interest. This is definitely a major project, and while the program may look simple, there is some extensive code behind it now. Next release will probably be in a week or so.