Slingshot package ------ Error in crossprod(out) : "crossprod" is not BUILTIN function

[yolo177]

When I run this code:
slingshot(rd2, reducedDim = rd2,
clusterLabels = ChuCellTypes$Time,
start.clus = '00h', end.clus = '96h')
I encountered an error : Error in crossprod(out) : “crossprod” is not BUILTIN function

Initially, I thought it was a data or package version issue, but even after updating all packages, the error persists. Then, I tried to run the example code provided in the documentation for the slingshot function:

data("slingshotExample")
rd <- slingshotExample$rd
cl <- slingshotExample$cl
pto <- slingshot(rd, cl, start.clus = '1')
Still, it resulted in the same error: “Error in crossprod(out) : “crossprod” is not BUILTIN function”

Could someone please help me? Thank you very much!

[kstreet13]

Hi @yolo177,

Thanks for bringing this to my attention! I don't know much about this, but apparently the crossprod function was recently changed in a subtle way that breaks pre-compiled packages (based on this thread). Slingshot doesn't directly call crossprod, so this is likely an issue with TrajectoryUtils. Can you try downloading that package and installing from source and let me know if that solves the problem?

Thanks,
Kelly