Package check result: ERROR

Check: examples, Result: ERROR
  Running examples in ‘NetworkComparisonTest-Ex.R’ failed
  The error most likely occurred in:
  
  > base::assign(".ptime", proc.time(), pos = "CheckExEnv")
  > ### Name: NCT
  > ### Title: NetworkComparisonTest: Statistical Comparison of Two Networks
  > ###   Based on Several Invariance Measures
  > ### Aliases: NCT NetworkComparisonTest
  > 
  > ### ** Examples
  > 
  > library(IsingSampler)
  Error in library(IsingSampler) : 
    there is no package called ‘IsingSampler’
  Execution halted