Tim,
What you are seeing is because CN is looking for a tool to perform a specific function on a particular panel. To help determine what the actual problem is and where it's referencing, scroll down through your program. You will eventually find an operation that, again, has no tool assigned. The error should appear as something like this;
ERROR: Tool size (.??) and (.??) not set up in tooling.
Immediatley after that there will be a line of G&M code with the operation that was to be attempted in a comment box next to it, ie (Dado)
Above this you will also find the Sheet and Part information that will help you identify where the problem is.
Once you know where your problem is then you can begin to solve it. If it is a dado make sure your pocket tool settings are correct in \"Settings\". Then make sure you have the same tool configured properly in \"Tooling\".
Note: This error can also occur when you have very small hidden holes in your part and you do not have an operation tool small enough to machine them. This is usually a problem with the part design, not Control Nesting settings.
If this does not help you solve your problem feel free to give us a call here at Thermwwod. You can also Export the .cab file from Control Nesting and forward it along with the .twd you are trying to nest to;
program@thermwood.com
Someone will have a look at your settings and let you know where your problem is.
Thanks,