The initial release of SQL Anywhere 9 was primarily 32-bit. 64-bit support was added later, specifically in version 9.0.2. Therefore, looking for "SQL Anywhere 9" might not yield the required 64-bit binaries.
By using the 64-bit version (9.0.2) rather than running the 32-bit version in WoW64 compatibility mode, you gain several advantages: sql anywhere 9 download 64 bit
Run the setup.exe as an administrator.