Revert "Assembly Table isInvalid() Crash Fix"

This reverts commit 237319475196042325fbea0a2b81adc8341e3be7.
Revert "Revert "Assembly Table Temporary Fix""

This reverts commit ea3be8ae085b37c31e25dc7734c66218fad23a2a.
Revert "Assembly Table Temporary Fix"

This reverts commit 2a24885d08f33cba67478648481fa707032d8f51.
Revert "Laser Crash Workaround"

This reverts commit 7f12de23454c19a57741e470ae04b20b30f266c3.