Package suggested but not available for checking: ‘optmatch’
Running examples in ‘met-Ex.R’ failed
The error most likely occurred in:

> ### Name: gfks1_stat
> ### Title: Univariate GFKS statistics
> ### Aliases: gfks1_stat
> 
> ### ** Examples
> 
> library(optmatch)
Error in library(optmatch) : there is no package called ‘optmatch’
Execution halted