jandirks wrote:I could open another board, I tried the hexapod sample. That board could be opened fine from within the schematic drawing.
Then I tried to open my own schematic again (different computer this time) and got the same problem when changing to board. Another message I sometimes get (and sometimes not get) with this design is 'cannot perform forward/backward annotation'). I tried to reproduce this error now, but it appeared a couple of times this afternoon.
jandirks,
Good! Let's address the second issue first, the error
regarding back annotation will appear if the board
and the schematic get out of sync. This can happen
if you only open the board or the schematic editor
and close it again. Not sure if this is a flaw in the
otherwise excellent software, but a rule to follow is
to open both the schematic and the board anytime
you do a project (even if you only open a completed
project to print or review on the screen).
I assume that you have a legal copy of the program?
Also, that you have not opened anyone else's EGLE
files on your system? There is an issue for anyone
that has tried to break the security.
Next, go back to your schematic and run the ERC.
Make sure there are no error messages, and that any
warnings given are acceptible to you (for example the
component may have a Vdd pin that you've connected
to a 5V net - which is legal but generates a warning).
Now close EAGLE and use the OS file browser to view
the folder (directory) for this project. Look for any files
with *.brd or *.b#(a digit), and delete them. Go back
to EAGLE and open your schematic again, try to create
a board from it.
Let us know if this works, Comments Welcome!