<div dir="ltr"><div>Around christmas, the Rubygems people released bundler 2.4. It unfortunately has differences in behaviors (that are being fixed by the bundler people ...) triggered by Autoproj. I&#39;ve been working hard to get to understand the issue(s) and fix them.<br><br></div><div>The status of things so far is: in EXISTING workspaces, edit .autoproj/Gemfile to remove the `gem &quot;utilrb&quot; line, and update the autoproj version to 2.16.0. If your workspace is already broken because autoproj itself won&#39;t work, you can run the autoproj_install script at <br><pre><code><a href="https://raw.githubusercontent.com/rock-core/autoproj/master/bin/autoproj_install" target="_blank">https://raw.githubusercontent.com/rock-core/autoproj/master/bin/autoproj_install</a><br></code></pre></div><div>from within the workspace&#39;s root to fix it (after you have changed the Gemfile). Autoproj&#39;s own bootstrap script has been updated, so NEW workspaces won&#39;t have this issue.<br></div><div><br></div><div>I generally recommend following the documentation at <a href="https://www.rock-robotics.org/rock-and-syskit/basics/installation.html" target="_blank">https://www.rock-robotics.org/rock-and-syskit/basics/installation.html</a> to bootstrap a rock workspace (even if you&#39;re not a Syskit user). It&#39;s the most up-to-date regarding Ruby versions, compatibilities and how to install things.<br></div><div><br></div><div>Sorry for the inconvenience (and the lack of communication on my part)<br></div><div>-- <br><div dir="ltr" data-smartmail="gmail_signature"><div dir="ltr"><p dir="ltr" style="line-height:1.2;background-color:#ffffff;margin-top:0pt;margin-bottom:0pt"> </p><div dir="ltr" style="margin-left:0pt" align="left"><table style="border:none;border-collapse:collapse"><colgroup><col width="316"><col width="45"><col width="47"></colgroup><tbody><tr style="height:48.75pt"><td style="vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden"><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><a href="https://www.tidewise.io/" style="text-decoration:none" target="_blank"><span style="font-size:11pt;font-family:Lato,sans-serif;color:#1155cc;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:underline;vertical-align:baseline;white-space:pre-wrap;white-space:pre-wrap"><span style="border:none;display:inline-block;overflow:hidden;width:285px;height:40px"><img src="https://lh3.googleusercontent.com/MpJVJSxVz4qq8DfXkW-PdRGQTm07vTf2qbosZCMDqnFIEFfw8T9QCvQij5OmrJ_QxiBEVmT_0Sb-2UjyyNtNpwBqeMWTLekvX5hiRv5YkjE3IxPCj0L6jWe4nvW0Y99qH3jPKl4t" style="margin-left:0px;margin-top:0px" width="285" height="52.6829268292683"></span></span></a></p></td><td style="vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden"><p dir="ltr" style="line-height:1.2;text-align:center;margin-top:0pt;margin-bottom:0pt"><a href="https://www.linkedin.com/company/tidewise" style="text-decoration:none" target="_blank"><span style="font-size:11pt;font-family:Lato,sans-serif;color:#1155cc;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:underline;vertical-align:baseline;white-space:pre-wrap;white-space:pre-wrap"><span style="border:none;display:inline-block;overflow:hidden;width:35px;height:35px"><img src="https://lh6.googleusercontent.com/uUfv94W4P7R9s8edR0pEnYeoMBeA76dA52LhSLmhJioGSJ-vuJkr_KWaogq7IBGosyu7b4hhOdcfZsdALPWyGkJsM6VOEjelow678yR1AYyG_tDO5uxq9O1WBb6g8kqSGQCZXak4" style="margin-left:0px;margin-top:0px" width="35" height="35"></span></span></a></p></td><td style="vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden"><p dir="ltr" style="line-height:1.2;text-align:center;margin-top:0pt;margin-bottom:0pt"><a href="https://www.youtube.com/channel/UCqkA0F52ImGGVNORHx770Vg" style="text-decoration:none" target="_blank"><span style="font-size:11pt;font-family:Lato,sans-serif;color:#1155cc;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:underline;vertical-align:baseline;white-space:pre-wrap;white-space:pre-wrap"><span style="border:none;display:inline-block;overflow:hidden;width:35px;height:35px"><img src="https://lh6.googleusercontent.com/Xlu6C24IrwE9VSkdevqs5LVyMxsoipOKRk_ymc_EhPhwL1zkGkJSzdSfHarHdKMos_jlQ7-481Eb92IeuLfEQwlJ_O1s8ooDXH-_ET68EpjL58Ax3bFa7DG2QDKUXjkoZT14e-sy" style="margin-left:0px;margin-top:0px" width="35" height="35"></span></span></a></p></td></tr><tr style="height:21pt"><td style="vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden"><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><span style="font-size:12pt;font-family:Lato,sans-serif;color:#007c91;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;white-space:pre-wrap">Sylvain Joyeux</span></p><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><span style="f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