XML File Loading Issue

I'm having trouble loading an XML file into my custom-built desktop software. The file simply won't load, and I'm unsure of the cause. I need a tech expert who can help diagnose and resolve this issue swiftly.

Ideal Skills and Experience:
- Proficient in XML and desktop application troubleshooting
- Experience with custom-built software
- Strong problem-solving skills
- Ability to work quickly and efficiently