<https://forum.kerbalspaceprogram.com/index.php?/topic/50533-18x-112x-module-manager-421-august-1st-2021-locked-inside-edition/page/172/#comment-2801878>
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"I have a strange issue, and I'm wondering if anyone has some suggestions about how to diagnose. I'm on MM 2.7.2.\n \n\n\n\t \n \n\n\n\tSomeone using RealScaleBoosters with the optional Stockalike configs reported a problem, that appears to be 100% reproducible. After the MM patches run, almost all of the parts throw exceptions in the PartCompiler phase. Without the MM patches, they load correctly. The patches are pretty complex, so I can't paste it here, but basically they just rescale the parts, and recalculate fuel capacities, thrust, mass, etc, and possibly change the tech node it's associated with, and a few other things.\n \n\n\n\t \n \n\n\n\tIs there a way I can figure out, or at least narrow down what \"input string\" the following is referring to in each case? This all worked prior to 1.2 and the new MM versions for it. I'm guessing some field somewhere is getting encoded as a string when it should be an integer, or vice versa.\n \n\n\n\t \n \n\n\n\t \n \n\n\n\t[ERR 10:22:30.258] PartCompiler: Cannot compile part\n \n\n\n\t[LOG 10:22:30.259] PartLoader: Compiling Part 'RealScaleBoosters/Parts/Atlas/RSBtankAtlasCentaur/RSBtankAtlasCentaur' \n\t[ERR 10:22:30.260] PartLoader: Encountered exception during compilation. System.FormatException: Input string was not in the correct format \n\t  at System.Int32.Parse (System.String s) [0x00000] in &lt;filename unknown&gt;:0 \n\t  at PartLoader.ParsePart (.UrlConfig urlConfig, .ConfigNode node) [0x00000] in &lt;filename unknown&gt;:0 \n\t  at PartLoader+&lt;CompileParts&gt;c__Iterator62.MoveNext () [0x00000] in &lt;filename unknown&gt;:0\n \n\n\n\t \n \n"
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