I can reproduce the error message, but that's it.
If I click where it says, "click on this message for more details", nothing
happens (it's not clickable).
On Mon, Mar 6, 2017 at 11:44 AM Thomas Mortagne <thomas.mortagne(a)xwiki.com>
wrote:
  If you can reproduce it again, would be great if you
could click on
 the message to get the complete error and create a jira issue with the
 details on 
https://jira.xwiki.org/browse/XWIKI.
 On Mon, Mar 6, 2017 at 6:42 PM, Thomas Mortagne
 <thomas.mortagne(a)xwiki.com> wrote:
  It probably does not have anything to do with the
extensions themself.
 Looks more like a random bug of Extension Manager UI.
 On Mon, Mar 6, 2017 at 5:59 PM, Keith Davis <laurinkeithdavis(a)gmail.com> 
wrote:
 > Well, maybe I’m crazy, now it's only
happening for the Let’s Encrypt
> extension.
>
> On Mon, Mar 6, 2017 at 10:57 AM, Keith Davis < 
laurinkeithdavis(a)gmail.com>
 > wrote:
>
>> I installed the Let's Encrypt extension and got this message:
>>
>> Failed to execute the [velocity] macro. Cause: [Illegal char <:> at 
index
    4: wiki:]. Click on this message for details.
 So I created this issue:
 
http://jira.xwiki.org/browse/LENCRYPT-3
 But then I realized, that I get this same error for one other
 extension: Icon Theme Application
 Any ideas?
 --
 Keith Davis
 214-906-5183 <(214)%20906-5183>
 
 --
 Keith Davis
 214-906-5183 
 
 --
 Thomas Mortagne 
 
 --
 Thomas Mortagne