Multi file download results in only 1 file being downloaded

Hi all,

I am attempting to implement the multi file document download in my project (Mx7.6)

When using a microflow as an object it throws the following error in the console :

com.mendix.webui.WebUIException: No read only change hash found, while read only values are changed for object with id '5348024557504365'.
    at com.mendix.webui.requesthandling.HashUtil$.verifyHash(HashUtil.scala:52)
 

When using the xpath constraint option instead the download works, however only the first out of 3 files are actually downloaded to the client.

Has anyone experienced something like this before ?

Kind regards,

Ryan Mocke.