FTDI d2xx-dll-ULP nutzen. Eine Funktion bekomme ich einfach nicht zum Laufen

; #FUNCTION# ;===============================================================================
;
; Name...........:  FT_EE_Read
; Description ...: 	Read the contents of the EEPROM.
;
; Syntax.........:  FT_EE_Read ($FT_HANDLE)
;
; Parameters.....: 	$FT_HANDLE			Handle of the device.
;					$pData        		Pointer to structure of type FT_PROGRAM_DATA.
;
; Return values .: Sucess - 0 if successful,
;                  Failure - the return value is an FT error code.
;				   	|x - use _USBFT_ErrorDescription(x) for more detailed information
;
; Author ........: Neil Jensen (wakido;NBJ)
; Modified.......:
; Remarks .......: Part of the FTD2XX.dll EEPROM Programming Interface
;						This function interprets the parameter pData as a pointer to a structure of type
;						FT_PROGRAM_DATA that contains storage for the data to be read from the EEPROM.
;						The function does not perform any checks on buffer sizes, so the buffers passed in the
;						FT_PROGRAM_DATA structure must be big enough to accommodate their respective strings
;						(including null terminators).  The sizes shown in the following example are more than
;						adequate and can be rounded down if necessary.  The restriction is that the Manufacturer
;						string length plus the Description string length is less than or equal to 40 characters.
;						Note that the DLL must be informed which version of the FT_PROGRAM_DATA structure is
;						being used.  This is done through the Signature1, Signature2 and Version elements of the
;						structure.  Signature1 should always be 0x00000000, Signature2 should always be 0xFFFFFFFF
;						and Version can be set to use whichever version is required.  For compatibility with all current
;						devices Version should be set to the latest version of the FT_PROGRAM_DATA structure which
;						is defined in FTD2XX.h.   See url above for more information.
; Related .......:
; Link ..........:
; Example .......:
; Original ......: FT_EE_Read(FT_HANDLE ftHandle, PFT_PROGRAM_DATA pData)
;==========================================================================================
Func _FT_EE_Read($FT_HANDLE, $pData)
	$v_Result = DllCall($v_Dll, 'long', 'FT_EE_Read', 'ptr', $FT_HANDLE, 'ptr', DllStructGetPtr($pData))
	Return $v_Result[0]
EndFunc   ;==>_FT_EE_Read