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

> ### Name: loadings.MxModel
> ### Title: Extract factor loadings from an EFA (factor analysis).
> ### Aliases: loadings.MxModel
> 
> ### ** Examples
> 
> myVars <- c("mpg", "disp", "hp", "wt", "qsec")
> m1 = umxEFA(name = "test", factors = 2, data = mtcars[, myVars])
2 latent variables were created:F1, F2. 
Running EFA with 19 parameters
Warning: In model 'EFA' Optimizer returned a non-zero status code 6. The model does not satisfy the first-order optimality conditions to the required accuracy, and no improved point for the merit function could be found during the final linesearch (Mx status RED)
[1] "Rotation results"
$loadings

Loadings:
     F1     F2    
mpg   0.869  0.524
disp -0.475  4.757
hp   -0.823  0.548
wt           8.165
qsec  1.495  9.421

                 F1      F2
SS loadings    3.90 178.619
Proportion Var 0.78  35.724
Cumulative Var 0.78  36.504

$rotmat
           [,1]      [,2]
[1,]  0.8563396 0.5164132
[2,] -0.5164132 0.8563396

[1] "Factor Correlation Matrix"
             [,1]         [,2]
[1,] 1.000000e+00 2.220446e-16
[2,] 2.220446e-16 1.000000e+00
?umxSummary showEstimates='raw|std', digits, report= 'html', filter= 'NS' & more
Running Saturated EFA with 20 parameters

 *** caught segfault ***
address 0, cause 'memory not mapped'

Traceback:
 1: runHelper(model, frontendStart, intervals, silent, suppressWarnings,     unsafe, checkpoint, useSocket, onlyFrontend, useOptimizer)
 2: mxRun(model, silent = FALSE)
 3: FUN(X[[i]], ...)
 4: lapply(ReferenceModelHelper(x, distribution), function(model) {    if (!isS4(model))         return(model)    model <- omxAssignFirstParameters(model)    model <- mxOption(model, "Standard Errors", "No")    model <- mxOption(model, "Calculate Hessian", "No")    if (run) {        model <- mxRun(model, silent = FALSE)    }    model})
 5: mxRefModels(model, run = TRUE)
 6: umxSummary.MxModel(m1, digits = digits, report = report)
 7: umxSummary(m1, digits = digits, report = report)
 8: umxEFA(name = "test", factors = 2, data = mtcars[, myVars])
An irrecoverable exception occurred. R is aborting now ...