An Error 46 indicates a length of string error. There are some limits on the length of data you can put in a 'TEXT' mnemonic, font name, or pathname for an image, so these might be the cause.
Also make sure the WindX is running current software as old versions of WindX had different string length maximums.
We would also suggest that you perhaps contact our support department at
https://helpdesk.pvxplus.com and see if they can assist. Please provide them the serial number and version of PxPlus you are using.