This library is similar to B4A and B4i GoogleMaps libraries. It is based on this open source project: https://github.com/dlsc-software-consulting-gmbh/GMapsFX/ (Apache 2 license). Under the hood it uses JavaFX WebView with GoogleMaps JavaScript API V3. Using the map is quite simple. You need...
www.b4x.com
The jgooglemaps.zip download contains v1.82.
Try download with another browser
Or maybe you do have two copies ? one in internal and one in external libs folder.