Checksum Error - Texas Instruments TI-73 Software Manual

Invalid Dim
You specified a matrix dimension as something other than an
integer between 1 and 99.
You attempted to invert a non-square matrix.
You attempted to access an invalid row or column value
referencing an existing matrix (e.g. [A] (1,2) when [A]=1Q1).
Memory
You specified a matrix with more than 100 elements.
Dim Mismatch
You attempted to perform an operation that references more
than one matrix, but the dimensions do not match.
Miscellaneous Error Received
Write down the error code displayed in the dialog box and
contact TI-CARES.

Checksum Error

Exit the installation and try it again. If this problem persists,
contact TI-CARES.
Matrices for the TI-73 Page 46