A problem with loading the calibration file has been fixed in JSInit(). Ports for Win32 are now available, and you can now select the .joystick calibration file in jscalibrator's file selector.
Fully compatible with the libjsw 1.4.x series, this version features a set of
additional axis precision and correction attributes, including dead zone and
correctional coefficient support. The 1.5.x series will be backwards compatible
with the 1.4.x series, although any programs linking to libjsw 1.4.x will need
to be recompiled if you choose to upgrade. A new tutorial for the 1.5.x API is
now online, giving examples for using all the new functions.