Allocation error

When I try to dim() or names() on the data, I get an allocation error. I'm running R 3.5.0 on Windows 10 64 bit.

```
> names(csp)
Error: cannot allocate vector of size 1.9 Gb
> dim(csp)
Error: cannot allocate vector of size 1.9 Gb
In addition: Warning message:
restarting interrupted promise evaluation 

```