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

> ### Name: cheating
> ### Title: GPA and chronic cheating (sample data)
> ### Aliases: cheating
> ### Keywords: datasets
> 
> ### ** Examples
> 
> ##
> ## Replication of latent class models in Dayton (1998)
> ##
> ## Example 1. Two-class LCA. (Table 3.3, p. 32)
> ##
> data(cheating)
> f <- cbind(LIEEXAM,LIEPAPER,FRAUD,COPYEXAM)~1
> ch2 <- poLCA(f,cheating,nclass=2)	# log-likelihood: -440.0271
Conditional item response (column) probabilities,
  
 by outcome variable, for each class (row) 
 
$LIEEXAM
           Pr(1)  Pr(2)
class 1:  0.4231 0.5769
class 2:  0.9834 0.0166

$LIEPAPER
           Pr(1)  Pr(2)
class 1:  0.4109 0.5891
class 2:  0.9708 0.0292

$FRAUD
           Pr(1)  Pr(2)
class 1:  0.7840 0.2160
class 2:  0.9629 0.0371

$COPYEXAM
           Pr(1)  Pr(2)
class 1:  0.6236 0.3764
class 2:  0.8181 0.1819

Estimated class population shares 
 0.1606 0.8394 
 
Predicted class memberships (by modal posterior prob.) 
 0.1693 0.8307 
 
========================================================= 
Fit for 2 latent classes: 
========================================================= 
number of observations: 319 
number of estimated parameters: 9 
residual degrees of freedom: 6 
maximum log-likelihood: -440.0271 
 
AIC(2): 898.0542
BIC(2): 931.9409
G^2(2): 7.764242 (Likelihood ratio/deviance statistic) 
X^2(2): 8.323404 (Chi-square goodness of fit) 
 
> 
> ##
> ## Example 2. Two-class latent class regression using
> ## GPA as a covariate to predict class membership as
> ## "cheaters" vs. "non-cheaters".
> ## (Table 7.1, p. 85, and Figure 7.1, p. 86)
> ##
> f2 <- cbind(LIEEXAM,LIEPAPER,FRAUD,COPYEXAM)~GPA
> ch2c <- poLCA(f2,cheating,nclass=2)	# log-likelihood: -429.6384

 *** caught segfault ***
address (nil), cause 'memory not mapped'

Traceback:
 1: EmAlgorithmRcpp(features, t(responses), probs.start$vector, ndata,     nfeature, noutcomes, nclass, nrep, na.rm, n.thread, maxiter,     tol, seed)
 2: poLCA(f2, cheating, nclass = 2)
An irrecoverable exception occurred. R is aborting now ...