Unable to load data for Material Color Object in FlexPLM

INFO  [ajp-bio-127.0.0.1-8010-exec-2] wt.system.err <username> - wt.util.WTException: An error occurred while importing data from the /appl/ptc/Windchill-11.0/Windchill/lcsdocuments/MaterialColor_DataFile.txt file.  The import processing stopped at line 1.  Check the method server log for more information.
INFO  [ajp-bio-127.0.0.1-8010-exec-2] wt.system.err <username> - Nested exception is: java.lang.IncompatibleClassChangeError: Expecting non-static method com.lcs.wc.material.LCSMaterialColorQuery.findMaterialColorsForMaterialSupplierAndColor(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)Lcom/lcs/wc/material/LCSMate
INFO  [ajp-bio-127.0.0.1-8010-exec-2] wt.system.err <username> -     at com.lcs.wc.load.LoadMaterial.findMaterialColor(LoadMaterial.java:269)
INFO  [ajp-bio-127.0.0.1-8010-exec-2] wt.system.err <username> -     at com.lcs.wc.load.LoadMaterial.createMaterialColor(LoadMaterial.java:229)
INFO  [ajp-bio-127.0.0.1-8010-exec-2] wt.system.err <username> -     at com.lcs.wc.load.LoadMaterial.createMaterialColor(LoadMaterial.java:93)
INFO  [ajp-bio-127.0.0.1-8010-exec-2] wt.system.err <username> -     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
INFO  [ajp-bio-127.0.0.1-8010-exec-2] wt.system.err <username> -     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
INFO  [ajp-bio-127.0.0.1-8010-exec-2] wt.system.err <username> -     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
INFO  [ajp-bio-127.0.0.1-8010-exec-2] wt.system.err <username> -     at java.lang.reflect.Method.invoke(Method.java:498)
INFO  [ajp-bio-127.0.0.1-8010-exec-2] wt.system.err <username> -     at wt.load.StandardLoadService.load(StandardLoadService.java:509)
INFO  [ajp-bio-127.0.0.1-8010-exec-2] wt.system.err <username> -     at wt.load.StandardLoadService.load(StandardLoadService.java:151)
INFO  [ajp-bio-127.0.0.1-8010-exec-2] wt.system.err <username> -     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
INFO  [ajp-bio-127.0.0.1-8010-exec-2] wt.system.err <username> -     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
INFO  [ajp-bio-127.0.0.1-8010-exec-2] wt.system.err <username> -     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
INFO  [ajp-bio-127.0.0.1-8010-exec-2] wt.system.err <username> -     at java.lang.reflect.Method.invoke(Method.java:498)
INFO  [ajp-bio-127.0.0.1-8010-exec-2] wt.system.err <username> -     at wt.services.ServiceFactory$ServerInvocationHandler.invoke(ServiceFactory.java:399)
INFO  [ajp-bio-127.0.0.1-8010-exec-2] wt.system.err <username> -     at com.sun.proxy.$Proxy196.load(Unknown Source)
INFO  [ajp-bio-127.0.0.1-8010-exec-2] wt.system.err <username> -     at wt.load.LoadFromFile.doFileLoad(LoadFromFile.java:390)