The PROG or BIN file you attempted to LOAD, LOADSUB or CAT was created with an earlier release of HTBasic and is not compatible with the current release. For 1.x/2.x PROG files, use the HT2SAVE utility (explained in the Users Guide) to convert your PROG files to the current format. This can also be done by LOADing and SAVEing the file with the old release of HTBasic and then GETting and STOREing the file with the new release. For old BIN files, you must contact the supplier of the BIN file for information about upgrading.