Hi, just did a little bit of debugging, looks like Convolotron is to blame, as it accesses the buffer beyond its end in src/Convolotron.C +181. In line 198, there's the corresponding off by one. I think line 190 / 191 can also result in an off by one access.
Sadly fixing these two places didn't seem to help :(. Maybe that's a starting point nonetheless. Cheers, Stefan.
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