Been a while since I actually used it, so I double checked on a few different builds. All lvl 50 with set IO builds.
Fire/Fire Blaster - works.
Ill/Kin Controller - works.
Fire/Spines Brute - fails. "Invalid Import Data, Blame Sai! Error: Redirects.Inherents.Fury_Proc"
So I tried with another brute.
EM/EA Brute - fails. Same error message.
Let's check other toons, see if we can find a pattern.
Stone/SJ Tanker - fail - Blame Sai, Gauntlet_Proc
Dark/Rad Controller - works.
Plant/Pain Controller - sorta fails, but works. - Blame Sai. Error: Crafted_Malaises_Illusions_F, then everything shows up, except the some of IOs in the inherent powers.
Psi/Shield Scrapper - fails, but works - Crafted_Apocalypse_D
Peacebringer - fails - Peacebringer_Defensive.Luminous_Aura.Energy_Flight
Sonic/Martial Blaster - fails, but works. Crafted_Endurance_Discount (which is odd, other builds have had this...Also, duplicates Reach for the limit, giving one of them at lvl 1, pushing Ki Push to lvl 2 which is another error. Greys out most IOs in the default slots, but not in Scream - lvl 1 power, or Ki Push, which it has as lvl 2)
EM/Regen Stalker - fails, but works. Crafted_Endurance_Discount - doesn't have the IOs in some inherent powers.
Mind/Psi Dominator - works
Ill/Rad Controller - fails, but works. Crafted_Unbreakable_Guard_A - Another Strange one. That would be in Flash. In my Ill/Kin, it's in Blind, but doesn't error out.
Demons/Cold Mastermind - fails, but works - Crafted_Panacea_A - Again, used in other builds without error.
Psi/WP Sentinel - Fails. Multiple Superior_Sentinels_Ward, Epic.Sentinel_Psionic_Mastery.Mind_Probe
Fire/Dark Corruptor - Works
SR/Mace Tanker - Fails, Gauntlet_Proc
Thugs/Thermal Mastermind - fails, but works - Crafted_Recharge (seriously?? EVERY build has that, why would it fail on this one?)
Arachnos Widow - holy shit what a fail. Error: C:\COH\Axis\Builds\build.txt is an invalid file name. Gives an unhandled exception error, closes the program.
....I have more 50s, but I think that's enough.
Checking a couple ATs that I don't have at 50...
Arachnos Soldier - Error: C:\COH\Axis\Builds\build.txt is an invalid file name. Gives an unhandled exception error, closes the program.
Warshade - fails. Warshade_Offensive.Umbral_Blast.Dark_Nova_Bolt
Rad/Rad Sentinel - fails, but works - Error: Pool.Speed.Hasten (last power taken)
Ok, so opening a /buildsave file mostly fails, depending on the build. But it works enough to get most builds a good starting point.
Hopefully someone can take a look at this and see if it's fixable.