Selenium IDE requires 2 identical commands for button press - selenium

Question

Here is an exerpt from my Selenium script
<tr>
<td>storeElementPresent</td>
<td>css=a.btn.btn-style-c[href="/shortlist/Remove/${codeparc}"]</td>
<td>isSelected</td>
</tr>
<tr>
<td>echo</td>
<td>${isSelected}</td>
<td></td>
</tr>
<tr>
<td>gotoIf</td>
<td>${isSelected}==true</td>
<td>skipToRemoveFromShortlist</td>
</tr>
<tr>
<td>click</td>
<td>css=a.btn.btn-style-c[href="/shortlist/Add/${codeparc}"]</td>
<td></td>
</tr>
<tr>
<td>click</td>
<td>css=a.btn.btn-style-c[href="/shortlist/Add/${codeparc}"]</td>
<td></td>
</tr>
<tr>
<td>gotoLabel</td>
<td>endOfShortlisting</td>
<td></td>
</tr>
<tr>
<td>label</td>
<td>skipToRemoveFromShortlist</td>
<td></td>
</tr>
<tr>
<td>click</td>
<td>css=a.btn.btn-style-c[href="/shortlist/Remove/${codeparc}"]</td>
<td></td>
</tr>
<tr>
<td>click</td>
<td>css=a.btn.btn-style-c[href="/shortlist/Remove/${codeparc}"]</td>
<td></td>
</tr>
<tr>
<td>label</td>
<td>endOfShortlisting</td>
<td></td>
</tr>
<tr>
<td>click</td>
<td>id=cboxClose</td>
<td></td>
</tr>
Commands 4 and 5 are duplicates
Commands 8 and 9 are duplicates
In step through mode if I execute the command twice it works fine.
Test page for you to look at - www.eurocamp.co.uk/pa012