seq.Date giving problems
<p>I have recently updated R to version 3.2.3 and now I found a problem using <code>seq</code> with dates:</p>

<pre><code>date1&lt;-as.POSIXct("2014-01-30 02:00:00")
date2&lt;-as.POSIXct("2014-12-24 11:00:00")
seq(date1,date2,by="month")
#[1] "2014-01-30 02:00:00 CET"  "2014-03-02 02:00:00 CET" 
#[3] NA                         "2014-04-30 02:00:00 CEST"
#[5] "2014-05-30 02:00:00 CEST" "2014-06-30 02:00:00 CEST"
#[7] "2014-07-30 02:00:00 CEST" "2014-08-30 02:00:00 CEST"
#[9] "2014-09-30 02:00:00 CEST" "2014-10-30 02:00:00 CET" 
#[11] "2014-11-30 02:00:00 CET" 
</code></pre>

<p>I don't understand where the <code>NA</code> comes from. I have tried on different machines with both the same R version as mine or a previous one and in the place of that <code>NA</code> they correctly give <code>"2014-03-30"</code>. Furthermore, if I change the year in the dates from 2014 to 2015, no <code>NAs</code> are returned!
I guess that during the installation something in my locale was modified but I cannot understand how to fix the problem.
<code>Sys.getlocale()</code> returns:</p>

<pre><code>"en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8"
</code></pre>

<p>and my system is a Mac Book Pro with Maverick.
Thanks for any help!</p>