Running examples in ‘drfit-Ex.R’ failed
The error most likely occurred in:

> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
> ### Name: IM1xIPC81
> ### Title: Dose-Response data for 1-methyl-3-alkylimidazolium
> ###   tetrafluoroborates in IPC-81 cells
> ### Aliases: IM1xIPC81
> ### Keywords: datasets
> 
> ### ** Examples
> 
>   rIM1xIPC81 <- drfit(IM1xIPC81, linlogit = TRUE, showED50 = TRUE, EDx = 10)

IM13 BF4: Fitting data...


IM14 BF4: Fitting data...

Warning in pnorm(-log10(dose), -logED50, scale) : NaNs produced

IM15 BF4: Fitting data...


IM16 BF4: Fitting data...


IM17 BF4: Fitting data...

Waiting for profiling to be done...
Warning in pnorm(-log10(dose), -logED50, scale) : NaNs produced

IM18 BF4: Fitting data...

Waiting for profiling to be done...
Warning in pnorm(-log10(dose), -logED50, scale) : NaNs produced

IM19 BF4: Fitting data...

Waiting for profiling to be done...
Warning in pnorm(-log10(dose), -logED50, scale) : NaNs produced

IM1-10 BF4: Fitting data...

Waiting for profiling to be done...
> 
>   rIM1xIPC81.drc <- drcfit(IM1xIPC81, linlogit = TRUE, showED50 = TRUE, EDx = 10)
Error in .make_numeric_version(x, strict, .standard_regexps()$valid_numeric_version) : 
  invalid non-character version specification 'x' (type: double)
Calls: drcfit ... as.numeric_version -> numeric_version -> .make_numeric_version
Execution halted
Running examples in ‘drfit-Ex.R’ failed
The error most likely occurred in:

> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
> ### Name: IM1xIPC81
> ### Title: Dose-Response data for 1-methyl-3-alkylimidazolium
> ###   tetrafluoroborates in IPC-81 cells
> ### Aliases: IM1xIPC81
> ### Keywords: datasets
> 
> ### ** Examples
> 
>   rIM1xIPC81 <- drfit(IM1xIPC81, linlogit = TRUE, showED50 = TRUE, EDx = 10)

IM13 BF4: Fitting data...


IM14 BF4: Fitting data...

Warning in pnorm(-log10(dose), -logED50, scale) : NaNs produced

IM15 BF4: Fitting data...


IM16 BF4: Fitting data...


IM17 BF4: Fitting data...

Waiting for profiling to be done...
Warning in pnorm(-log10(dose), -logED50, scale) : NaNs produced

IM18 BF4: Fitting data...

Waiting for profiling to be done...
Warning in pnorm(-log10(dose), -logED50, scale) : NaNs produced

IM19 BF4: Fitting data...

Waiting for profiling to be done...
Warning in pnorm(-log10(dose), -logED50, scale) : NaNs produced

IM1-10 BF4: Fitting data...

Waiting for profiling to be done...
> 
>   rIM1xIPC81.drc <- drcfit(IM1xIPC81, linlogit = TRUE, showED50 = TRUE, EDx = 10)
Error in .make_numeric_version(x, strict, .standard_regexps()$valid_numeric_version) : 
  invalid non-character version specification 'x' (type: double)
Calls: drcfit ... as.numeric_version -> numeric_version -> .make_numeric_version
Execution halted