Warnings using shared library dll with loadlibrary

Hi everbody!

I'm trying to use a camera via loadlibrary and its DLL. But when I'm executing the loadlibrary command I always receive the following warning messages:

Warning: The data type 's_UC480_CAMERA_INFO#1' used by structure s_UC480_CAMERA_LIST does not exist.  The structure may not be usable. 
> In loadlibrary at 403
  In Kamera at 8 
Warning: The data type 's_KNEEPOINT#10' used by structure s_KNEEPOINTARRAY does not exist.  The structure may not be usable. 
> In loadlibrary at 403
  In Kamera at 8 
Warning: The data type 's_KNEEPOINT#10' used by structure s_KNEEPOINTINFO does not exist.  The structure may not be usable. 
> In loadlibrary at 403
  In Kamera at 8 
Warning: The data type 'error' used by structure s_UC480_ETH_IP_CONFIGURATION does not exist.  The structure may not be usable. 
> In loadlibrary at 403
  In Kamera at 8 
Warning: The data type 'error' used by structure s_UC480_ETH_IP_CONFIGURATION does not exist.  The structure may not be usable. 
> In loadlibrary at 403
  In Kamera at 8 
Warning: The data type 'error' used by structure s_UC480_ETH_DEVICE_INFO_HEARTBEAT does not exist.  The structure may not be usable. 
> In loadlibrary at 403
  In Kamera at 8 
Warning: The data type 'error' used by structure s_UC480_ETH_DEVICE_INFO_HEARTBEAT does not exist.  The structure may not be usable. 
> In loadlibrary at 403
  In Kamera at 8 
Warning: The data type 'error' used by structure s_UC480_ETH_DEVICE_INFO_HEARTBEAT does not exist.  The structure may not be usable. 
> In loadlibrary at 403
  In Kamera at 8 
Warning: The data type 'error' used by structure s_UC480_ETH_AUTOCFG_IP_SETUP does not exist.  The structure may not be usable. 
> In loadlibrary at 403
  In Kamera at 8 
Warning: The data type 'error' used by structure s_UC480_ETH_AUTOCFG_IP_SETUP does not exist.  The structure may not be usable. 
> In loadlibrary at 403
  In Kamera at 8 
Warning: The data type 'S_IMAGE_FORMAT_INFO#1' used by structure S_IMAGE_FORMAT_LIST does not exist.  The structure may not be usable. 
> In loadlibrary at 403
  In Kamera at 8 
Warning: The data type 'S_FDT_INFO_EL#1' used by structure S_FDT_INFO_LIST does not exist.  The structure may not be usable. 
> In loadlibrary at 403
  In Kamera at 8

Since I'm having problems later on in the program I figured there might be some issue with reading the DLL. Any thoughts on this problem? Or maybe even solutions? :-)

Thanks a lot for your help!