Since three or four months my mount don't stop slewing if I try to park it. At the first time it destroyed a cable because it slews beyond the scope limits. Currently I let the scope manually slew to the parking position and then turn it of. I use a BananaPi as server and build everything from the sources (17.7.2017). I append a log file from the eqmod-driver.
2017-07-17T14:04:08: Parking mount: RA increment = -7939585, DE increment = -87620722017-07-17T14:04:08: GetDEEncoder() = 87620722017-07-17T14:04:08: read_eqmod: "=D8B285", 8 bytes read
2017-07-17T14:04:08: dispatch_command: ":j2", 4 bytes written
2017-07-17T14:04:08: GetRAEncoder() = 7939585
it seems your park position is 0x000000 encoder position in both RA and DEC.
Knowing that encoder positions are centered in 0x800000, this is not usual.
Could you check the contents of your ParkData file ?
Or maybe reset your park position using the driver.