Hello. When trying to save a wad in CustomizeMii, I get this error message:
Some system information if it's relevant:
OS: Windows 10 Home 64-bit
RAM: 8GB
CPU: Intel Pentium 3825U (Broadwell-U)
HDD: Seagate ST2000LM003
Motherboard: HP 80C1
In other words, it's a 64-bit laptop with Windows 10...