The Gang Mask code was written so the Minimum Pad to Pad had to be greater than the value entered. Adding 0.001 to the Minimum Pad to Pad worked. But now it works with the actual value (not greater than the value). 

We also added a new Forum post regarding this subject:

The V25.03 Footprint Expert pre-release will be available next week. 

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When I use 3 places it works OK. But that's because when 4 places are rounded to 3 places, the rounding is up. 

Try this - use 4 places and for the Minimum Pad to Pad Spacing use 0.2033. 

The new FED Vol 18 Nominal Calculation Mode comes with V25.02 Footprint Expert. 

Switch between Min/Max and Nominal Mode in "Tools > Options > File > Calculation Mode > Min/Max or Nominal". 

The new feature is located in the "Help > User Guide > Option Settings > Calculation Mode Options". 

 

by the way thanks for sharing the FED Vol 18 standard, for some reason I did came up to the same conclusions over the time... are you planning to give a quick update and presentation about it? I'm not sure if we can buy it or what its include on it. so a quick summary may help to justify it ;)

Footprint Expert is trimming the pads per the SMD Pad Stack Rules and turns off the Gang Mask feature. 

What Solder Mask annular swell do you use? 0.05, 0.07 or 0.10? 

What is your Minimum Solder Mask Web? 0.07, 0.08 0.09 or 0.10? 

Multiply the Solder Mask annular swell by 2 and add the Minimum Solder Mask Web. 

Then use that value to set your Minimum Pad to Pad Spacing rule. 

This will effectively turn off the Gang Mask feature. 

I do trust more in FPE than Altium, if the only solution now is to do 1:1 in FPE and then control it in the CAD tool, I do think this is going backwards, you should bring the option back.