Unclear error messages

[Erinaceida]

I'm trying to reproduce the results i got from icenReg using frailtypack. so far I can't get frailtyPenal to work. It is sometimes able to compute models with single covariate, but not always.

The error message i get is "warning: problem in the loglikelihood computation. the program stopped abnormally. Please verify your dataset."

My data is fine- no NAs in covariates or timestamps. timestamps and the outcome is also how frailtypenal wants them. I run those models with icenReg with no issue. and even if there is some issue in there- why is it only coming up with some but not all covariates?

I'm unable to produce an example of my data, but i'm not the first one with this issue:

https://community.rstudio.com/t/error-in-frailtypack/115086
https://community.rstudio.com/t/problem-in-the-loglikelihood-computation/65645
https://stackoverflow.com/questions/39211025/r-frailtypack-abnormally-terminates

Can we ask for a bit more clarification as to what could be throwing this error?