The first field of lookup transformation <transformation name> has to be a Dynamic Lookup field when dynamic lookup cache is enabled. Transformation is not valid.
In the XML file, you defined the dynamic lookup cache attribute to YES, but you did not define the first lookup port as NewLookupRow.
When the dynamic lookup cache attribute is set to YES, the first field has to be NewLookupRow. Edit the XML file, or export the object again and then import it.