Hi Raluca,
I am worry about my KMC plug-in file might be out-of-date since the file was downloaded from SAP one year ago. You should do the same thing just like I did last time which is to open an OSS message & ask SAP support team to correct this error (I know it's very annoying and why SAP doesn't just leave it as built-in plug-in). Thanks.
Regards,
Nick