The WMF files produced by Corel Draw X6 16.4.1.1281 are no longer valid.
WMF File format has always worked until this point.
The only suggestion for anyone affected that I can see is to downgrade.
Has anyone checked WMF file format output is functional (and tried to load resulting WMF file into something else that reads WMF) in the new Corel Draw X7?
Warren
Both WMF and EMF files export properly here from the same X6 release, made from benign to reasonably complex files.
As Harry mentioned, a sample that does not export as expected would be good to post.