I think you're bumping into the 20 argument limit for our (now rather old) Vector::create() implementation. I thought we also had a variadic C++11 version for this, but apparently I am mistaken...
A workaround is to use something like the ListBuilder class I put together a while back here: https://stackoverflow.com/questions/27371543/how-many-vectors-can-be-added-in-dataframecreate-vec1-vec2/27371771#27371771 but on our side, it would be nice to have a variadic create for when C++11 and above is supported / enabled by the compiler. Best, Kevin
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