From time to time when I play over one of my games on XG2, the analysis will show that I made a cube error (well, more than 'from time to time' but that's another story).
The problem is, when I go to XG2's "Cube Information" (under the "Analyze" tab) it looks like my decision to double was in fact correct.
For example, I might double with, say, 60% winning chances. XG2 tells me "No Double/Take". When I open "Cube Information" it might show the 'double point' at 57% (live cube) and maybe 52% (dead cube).
If it helps, I should note that this always happens in games from match play -- I don't play often in 'money game' settings.
(By the way, this is a hypothetical example; I don't have a game in front of me but could dig out an old game where this happened, if it'd be more helpful.)

So what's going on? I'm not doubting XG's analysis, I'm doubting my ability to interpret it correctly.
Thanks in advance,
Brion

That dead cube double point number is when you should double if the choice was between doubling now and doubling never. And your opponent never gets to recube (that's the "dead cube" part). If you're below that point you can never have a good double. If you're above it, you may or may not have a good double depending on a number of a factors. So for money if there are no gammons, this number should be 50%.

I think the live cube number assumes perfect cube efficiency for both players.

Thanks Grinder. I’m pretty sure I understand dead cube and live cube. The question is why XG says it’s a bad double when I’m playing thru the analysis, but the cube information window (under the analysis tab) shows it’s a proper double.
Maybe I’m having a hard time describing this well.... it’s the apparent internal inconsistency that has me puzzled.

In the cube information window, I'm not seeing any information showing whether the double was correct or not. This was taken from an incorrect double in a match. XG version 2.10.199.2658. Do you have an earlier version?

Oh that I could give you a screenshot from my computer, but I guess I don't have that permission.
So here's my best explanation.
(by the way, yes, that's the 'cube decision' window I was referring to in XG2).
So imagine you've just played an online match and saved it to your computer. You open the match in XG2 and hit "analyze match" -- in my case the analysis was 'thorough' for both players.
You're scrolling through the games of the match. The right panel is the board. The left panel is the list of moves. The lower left panel has three tabs: cube/move/summary.
You come across a point in the match where you doubled and opponent passed. It's marked as a blunder in the left panel (no double/take). You open the 'cube' tab in the lower left panel and it gives your "winning chances: 44.89%". You think, "sheesh, I can see why XG thought that was a blunder, my winning chances weren't even 50-50!"
You then hit the 'analysis' tab and open the 'cube information' popup window (just like you posted on your reply). To your surprise, the cube information popup window says "double point: 38.3% (for a live cube) and 38.3% (for a dead cube).
Now this is where I'm confused. According to XG's cube analysis panel (lower left corner of the main window), I had 44.89% winning chances. So if my winning chances were HIGHER than the cube information panel needed for a double, why was the double wrong? What am I missing?

That's the question I was trying to answer in my first post. "Double point", as calculated by XG here, does not mean: "If you are above this, you definitely have a cube". It means: "If you are below this, you definitely don't have a cube. If you are above this, you may or may not have a cube."

It's a number that's calculable over the board based on a match equity table, so it can be a useful guide in matches.

Ah! That makes sense. Sorry I didn't catch it first time around.
Thanks for your insights... and your patience