It shouldn't but there's always a chance. ASIO4ALL is free and open source - it's comprised of code that has been modified by a lot of different hands with quality control not necessarily always consistent.
I'd recommend doing a System Restore Backup prior to installing so you can roll back, just in case.
Windows 8 Pro 64-bit | Reason 7 | Asus Sabertooth Z77 | Intel i7 3770k Quad-Core @ 4.2 Ghz | 16 GB RAM | OCZ Vertex 4 SSD 256 GB | Balance | Nektar Panorama P-4
- "To argue with a person who has renounced the use of Reason is like administering medicine to the dead." - Thomas Paine