ID:234065 Can't export data to file <file_name>

CAUSE: You attempted to export an assignment, but the Quartus Prime software cannot export the assignment information to the specified Tcl Script File (.tcl) or Comma-Separated Value File (.csv). The file may be designated as read-only.

ACTION: Click OK to close the message dialog box, and then verify that any existing file with the same name is not read-only, that the directory is not read-only, or the file type is supported.