title: Solver failer in garch model
body: <p>Good Evening! Now I tested the GARCH model with external regressors:</p>
  
  <pre><code>library("tseries")
  library("xts")
  library("rugarch")
  
  Rim &lt;- read.csv("Rim.csv",  header=T, sep=";")
  Rcm &lt;- read.csv("Rcm.csv",  header=T, sep=";")
  
  n=119
  spec &lt;- ugarchspec(variance.model = list(model = "sGARCH", garchOrder = c(1, 1), submodel = NULL, external.regressors = NULL, variance.targeting = FALSE), mean.model = list(armaOrder = c(0, 0), external.regressors = matrix(Rcm[,1])), distribution.model = "norm", start.pars = list(), fixed.pars = list()) 
  my_lms=lapply(1:n,function(x) ugarchfit(spec=spec,data=Rim[,x],solver.control=list(trace=0)))
  </code></pre>
  
  <p>Yesterday I tested this model and R showed the results of this model.  Today I did not change the code but now R gives the error:</p>
  
  <pre><code>Warning messages:
  1: In .sgarchfit(spec = spec, data = data, out.sample = out.sample,  : 
  ugarchfit--&gt;warning: solver failer to converge.
  2: In .sgarchfit(spec = spec, data = data, out.sample = out.sample,  : 
  ugarchfit--&gt;warning: solver failer to converge.
  </code></pre>
  
  <p>Also I uddated this packages today after error.
  Also I illustrate the next information:</p>
  
  <pre><code> sessionInfo()
  R version 3.4.0 (2017-04-21)
  Platform: x86_64-w64-mingw32/x64 (64-bit)
  Running under: Windows &gt;= 8 x64 (build 9200)
  
  Matrix products: default
  
  locale:
  [1] LC_COLLATE=Russian_Russia.1251  LC_CTYPE=Russian_Russia.1251    LC_MONETARY=Russian_Russia.1251
  [4] LC_NUMERIC=C                    LC_TIME=Russian_Russia.1251    
  
  attached base packages:
  [1] parallel  stats     graphics  grDevices utils     datasets  methods   base     
  
  other attached packages:
  [1] rugarch_1.3-6 xts_0.9-7     zoo_1.8-0    
  
  loaded via a namespace (and not attached):
   [1] Rcpp_0.12.10                magrittr_1.5                knitr_1.15.1                misc3d_0.8-4               
   [5] xtable_1.8-2                lattice_0.20-35             R6_2.2.0                    FNN_1.1                    
   [9] Rsolnp_1.16                 GeneralizedHyperbolic_0.8-1 SkewHyperbolic_0.3-2        tools_3.4.0                
  [13] spd_2.0-1                   grid_3.4.0                  KernSmooth_2.23-15          htmltools_0.3.6            
  [17] digest_0.6.12               rgl_0.98.1                  numDeriv_2016.8-1           Matrix_1.2-9               
  [21] shiny_1.0.3                 nloptr_1.0.4                DistributionUtils_0.5-1     ks_1.10.6                  
  [25] htmlwidgets_0.8             codetools_0.2-15            mime_0.5                    compiler_3.4.0             
  [29] multicool_0.1-10            expm_0.999-2                jsonlite_1.4                truncnorm_1.0-7            
  [33] mvtnorm_1.0-6               httpuv_1.3.3    
  </code></pre>
  
  <p>Please, tell me what is the problem, because I can not understand the mistake.Thank you.</p>