I have FPC 3.0.0 and Lazarus 1.6RC2 installed on an RPi2B platform running Raspbian Jessie (latest).
In Lazarus I have installed the Indy 10.6.2 components from code downloaded by svn (trunk) yesterday.

Now I tried to use them for the first time by starting a new project and then selecting the tab "Indy Servers - Core", clicking on the middle icon (TIdSimpleServer).
Next I clicked in the form that was displayed by Lazarus in order to place the component there. Up pops a message with a red stop sign:

"Unable to stream selected components
There was an error during writing the selected
component IdSimpleServer1:TIdSimpleServer:
Access violation"

When I click OK the message goes away and the component is present on the form.

I have not seen such a message earlier and it will not happen if I drop any of the other components on the same tab onto the form. As expected it does not happen when I drop standard components like TButton and the like either.
It seems to be tied only to this TIdSimpleServer component, which of course is the one I want to use and the reason I installed Indy10 in the first place...

Any ideas?