D:\>cd "FT245 CPNET"

D:\FT245 CPNET>dir
 Volume in drive D is LENOVO
 Volume Serial Number is DC12-763B

 Directory of D:\FT245 CPNET

10/27/2018  10:29 AM    <DIR>          .
10/27/2018  10:29 AM    <DIR>          ..
10/19/2018  04:36 PM            79,374 CpnetSerialServer.jar
10/27/2018  10:09 AM             1,396 FT245R-server.rc
10/27/2018  10:25 AM         1,889,656 JavaSetup8u191.exe
               3 File(s)      1,970,426 bytes
               2 Dir(s)  25,461,485,568 bytes free

D:\FT245 CPNET>java -jar CpnetSerialServer.jar conf=FT245R-server.rc
Using config in FT245R-server.rc
Exception in thread "main" java.lang.NoClassDefFoundError: gnu/io/CommPortIdentifier
        at CpnetSerialServer.getPort(CpnetSerialServer.java:135)
        at CpnetSerialServer.<init>(CpnetSerialServer.java:104)
        at CpnetSerialServer.main(CpnetSerialServer.java:21)
Caused by: java.lang.ClassNotFoundException: gnu.io.CommPortIdentifier
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        ... 3 more

D:\FT245 CPNET>