[R] Error: evaluation nested too deeply: infinite recursion / options(expressions=)?

[rivercode]

For further info, I cannot check my memory usage or even use ls() :

> memory.limit
Error: evaluation nested too deeply: infinite recursion /
options(expressions=)?
> ?memory.limit
Error: evaluation nested too deeply: infinite recursion /
options(expressions=)?
> ls()
Error: evaluation nested too deeply: infinite recursion /
options(expressions=)?
> 

Thanks,
Chris

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