HI @Anonymous,
I don't think the font substitutions are at issue here although I would correct them anyway. you can do this in the STYLE command.
As far as pasting the block, the error indicates that it has already pasted an anonymous block of the same name. I suggest that you purge and audit your drawing. Close it, reopen and try again to see if it is still happening.
Please select the Accept as Solution button if my post fully solves your issue or answers your question.
John Vellek
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