Running examples in 'MARSS-Ex.R' failed
The error most likely occurred in:

> ### Name: augment.marssMLE
> ### Title: Return the model predicted values, residuals, and optionally
> ###   confidence intervals
> ### Aliases: augment.marssMLE augment_dfa augment_marss augmentmarxss
> 
> ### ** Examples
> 
>   dat <- t(harborSeal)
>   dat <- dat[c(2,11,12),]
>   MLEobj <- MARSS(dat, model=list(Z=factor(c("WA","OR","OR"))))
Success! abstol and log-log tests passed at 37 iterations.
Alert: conv.test.slope.tol is 0.5.
Test with smaller values (<0.1) to ensure convergence.

MARSS fit is
Estimation method: kem 
Convergence test: conv.test.slope.tol = 0.5, abstol = 0.001
Estimation converged in 37 iterations. 
Log-likelihood: 13.72233 
AIC: -11.44465   AICc: -8.918339   
 
                Estimate
A.OR.SouthCoast  0.49280
R.diag           0.02509
U.WA             0.06171
U.OR             0.03686
Q.(WA,WA)        0.01082
Q.(OR,OR)        0.00439
x0.WA            7.41712
x0.OR            6.56460
Initial states (x0) defined at t=0

Standard errors have not been calculated. 
Use MARSSparamCIs to compute CIs and bias estimates.

> 
> library(broom)
> library(ggplot2)
> theme_set(theme_bw())
> 
> # Make a plot of the observations and model fits
> d <- augment(MLEobj, interval="confidence")
> ggplot(data = d) + 
+   geom_line(aes(t, .fitted)) +
+   geom_point(aes(t, y)) +
+   geom_ribbon(aes(x=t, ymin=.conf.low, ymax=.conf.up), linetype=2, alpha=0.1) +
+   facet_grid(~.rownames) +
+   xlab("Time Step") + ylab("Count")
Error in namespaceExport(ns, exports) : 
  undefined exports: %s!=%, %s!==%, %s+%, %s<%, %s<=%, %s==%, %s===%, %s>%, %s>=%, %stri!=%, %stri!==%, %stri+%, %stri<%, %stri<=%, %stri==%, %stri===%, %stri>%, %stri>=%, stri_datetime_add<-, stri_sub<-, stri_subset<-, stri_subset_charclass<-, stri_subset_coll<-, stri_subset_fixed<-, stri_subset_regex<-, stri_c, stri_c_list, stri_cmp, stri_cmp_eq, stri_cmp_equiv, stri_cmp_ge, stri_cmp_gt, stri_cmp_le, stri_cmp_lt, stri_cmp_neq, stri_cmp_nequiv, stri_compare, stri_conv, stri_count, stri_count_boundaries, stri_count_charclass, stri_count_coll, stri_count_fixed, stri_count_regex, stri_count_words, stri_datetime_add, stri_datetime_create, stri_datetime_fields, stri_datetime_format, stri_datetime_fstr, stri_datetime_now, stri_datetime_parse, stri_datetime_symbols, stri_detect, stri_detect_charclass, stri_detect_coll, stri_detect_fixed, stri_detect_regex, stri_dup, stri_duplicated, stri_duplicated_any, stri_enc_detect, stri_enc_detect2, stri_enc_fromutf32, stri_enc_get, stri_enc_inf
Calls: <Anonymous> ... tryCatch -> tryCatchList -> tryCatchOne -> <Anonymous>
Execution halted