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

> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
> ### Name: combine_long_tab
> ### Title: Combine regression results from different models by columns
> ### Aliases: combine_long_tab
> 
> ### ** Examples
> 
> data(mtcars)
> m1 <- lm(mpg ~ vs + carb + hp + wt + wt * hp , data = mtcars)
> m2 <- update(m1, . ~ .+ wt * vs)
> summary(m1)

Call:
lm(formula = mpg ~ vs + carb + hp + wt + wt * hp, data = mtcars)

Residuals:
    Min      1Q  Median      3Q     Max 
-3.4054 -1.4962  0.0464  1.4798  4.4308 

Coefficients:
             Estimate Std. Error t value Pr(>|t|)    
(Intercept) 48.157120   4.097303  11.753 6.63e-12 ***
vs           1.077078   1.152430   0.935 0.358587    
carb        -0.042819   0.373640  -0.115 0.909642    
hp          -0.112698   0.027084  -4.161 0.000307 ***
wt          -8.070854   1.306957  -6.175 1.57e-06 ***
hp:wt        0.027354   0.007586   3.606 0.001295 ** 
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 2.196 on 26 degrees of freedom
Multiple R-squared:  0.8887,	Adjusted R-squared:  0.8672 
F-statistic:  41.5 on 5 and 26 DF,  p-value: 1.388e-11

> summary(m2)

Call:
lm(formula = mpg ~ vs + carb + hp + wt + hp:wt + vs:wt, data = mtcars)

Residuals:
    Min      1Q  Median      3Q     Max 
-3.4158 -1.5332  0.0755  1.3474  4.4336 

Coefficients:
             Estimate Std. Error t value Pr(>|t|)    
(Intercept) 46.698382   9.272303   5.036 3.39e-05 ***
vs           2.171317   6.320220   0.344   0.7341    
carb        -0.009202   0.425923  -0.022   0.9829    
hp          -0.106579   0.044364  -2.402   0.0240 *  
wt          -7.593981   3.016424  -2.518   0.0186 *  
hp:wt        0.025163   0.014639   1.719   0.0980 .  
vs:wt       -0.366764   2.081491  -0.176   0.8616    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 2.238 on 25 degrees of freedom
Multiple R-squared:  0.8888,	Adjusted R-squared:  0.8621 
F-statistic:  33.3 on 6 and 25 DF,  p-value: 9.391e-11

> combine_long_tab(to_long_tab(summary(m1)$coef), 
+                  to_long_tab(summary(m2)$coef))
ERROR : DLL requires the use of native symbols 
Error in combine_long_tab(to_long_tab(summary(m1)$coef), to_long_tab(summary(m2)$coef)) : 
  object 'main.table' not found
Execution halted