#562 DEMO prints "Turtle 0 has no picture" when explorer is open

[David Costanzo]

During the test pass for FMSLogo 8.0.2, I noticed that DEMO printed "Turtle 0 has no picture" at the point where the turtles are bitmapped to numbers (see screenshot). Also, I needed to restart the test pass several times because PASTEINCIRCLE reported a similar error. Both of these only happened while a windows explorer (the file manager) window was open. When I closed explorer, the problem was not reproducible.

This only happens when an explorer window exists (even if minimized) and only on my Windows 10 machine. I suspect that something in explorer is overwriting the clipboard image or perhaps locking the clipboard.

Even after I saw the "Turtle 0 has no picture" error, I was able to paste a picture of a "0" into mspaint.exe, suggesting that the clipboard was not overwritten.

I don't know if I'll be able to make progress on this, but I'm opening a bug in case others can provide more details.

How Reproducible:
Every Time (on Windows 10)

Steps to Reproduce:
1) Press Win+E to open an explorer window
2) Run DEMO in FMSLogo
3) Advance past the point where the turtles are bitmapped to numbers and walk around the screen.

What Happens:
A message appears in red in the commander history "Turtle 0 has no picture"

Expected Result:
No message appears in the commander history.