Embedded view suddenly not working

Embedded view suddenly not working

I have many html views containing list views embedded as div-tags. I have not touched the code of my app for weeks but suddenly some of these views do not work anymore. What happens is that the criteria is not applied propperly (no records are listed) and the header is shown (despite the tag "zc_Header=false").

Here's an example:
<div elName='zc-component' viewLinkName='Player_Entities_Embedded' params='Player_Name=<%=recP.Name%>&zc_RecSelect=true&Player_op=26&zc_Search=true&zc_AddRec=true&zc_DelRec=true&zc_Header=false&zc_Footer=false&zc_DuplRec=false&zc_EditBulkRec=false&zc_Summary=false'>Loading View...</div>

The string retrieved for recP.Name is correct.

Help is greatly appreciated.

My app is shared to support.

Regards, Filip