xNormal in "bake" recipe fails on obj files created by RizomUV (LIBRIZOMUV)

[blundellj]

xNormal in "bake" recipe hangs up when the models used (Either sourceMeshFile and/or preDecimatedUnwrappedTargetFile) is an obj files created by RizomUV (LIBRIZOMUV). The "bake" recipe successfully completes when the same file is imported and exported from Meshlab, and the exported file is then used instead.

It looks like the main difference is that while they both contain vt lines, the MeshLab created file has a "usemtl" section, while the RizomUV created file does not, see attached.

After the recipe is run "xNormal_debugLog.txt" only states

Mon Jan 31 12:54:36 2022 -> Can't create a Direct3D object instance... Is DirectX 9.0c well installed?

MorseTelegraphKey-20k-diffuse-webthumb.jpg
MorseTelegraphKey-unwrapped-webthumb-RizomUV.zip
MorseTelegraphKey-unwrapped-webthumb-MeshLab.zip