The "Top" version you download is likely the base M010 release. The final, stable build was M220 (Maintenance Release 220). The M220 version fixed hundreds of bugs related to drawing regeneration and 64-bit memory paging. Cracked M010 versions are notoriously unstable.
The keyword specifically demands 64-bit. This is critical. pro engineer wildfire 40 free download 64 bit top
Pro/ENGINEER Wildfire 4.0 was never free. A single commercial license for Wildfire 4.0 "Top" (Advanced) package cost approximately $4,995. PTC offered a free "Student Edition" for a brief period, but those expired after 30 days and were watermarked. The "Top" version you download is likely the
The most important thing to clarify immediately: There is no legal way to download Pro/ENGINEER Wildfire 4.0 for free. The Bad (By modern standards):
If you manage to get it running (perhaps on a legacy Windows XP virtual machine), here is a deep review of the software itself compared to modern standards:
The Good (For its time):
The Bad (By modern standards):