Try adding either all the C130 aircraft folders in the FSX-SE\SimObjects\Airplanes, OR add Steam\steamapps\common\fsx, to the exclusions list of you Anti Virus progrm, then reinstall the C-130 X-Perience to see if that fixes it.

Just so you know. I have added FSX, FSX-SE, P3Dv3, P3Dv4, and P3Dv5 to the exclutions list of my Anti Virus program (Avast One).
I have also added the location of where I store my installation files for all my add-ons for FSX/FSX-SE/P3Dv3/P3Dv4/P3Dv5 products to the exclusions list just in case.