tag:help.rubygems.org,2010-01-19:/discussions/problems/744-invalid-date-format-in-specification-dont-say-this-is-duplicateRubyGems.org: Discussion 2011-10-10T17:37:23Ztag:help.rubygems.org,2010-01-19:Comment/104653322011-10-10T17:37:22Z2011-10-10T17:37:22ZInvalid date format in specification (don't say this is duplicate)<div><p>If you reinstall these gems by hand it will clear the
errors.</p>
<pre>
<code>gem install chronic progress_bar …</code>
</pre>
<p>Please reopen if you still have issues after reinstalling these
gems.</p></div>Eric Hodel