Problems after v2.00x upgrade

[enertegus]

But unfortunately the ICON only shows an associated time-stamp (in Grey) when the StatusGA is OFF - as a result of the after() timer expiry 1 second after systemstart [so "StatusGA or after()" goes from OFF -> ON -> OFF].

That is not 1 second, but 1 Millisecond. The reason is, that the initializing of the webserver is initiated with systemstart with the default values. For this, there is this short delay which guarantees that there is no conflict. Unfortunately the else branch doesn't do this. So this is an issue we will fix next time
This will help -still untested, but a strong guess:

:begin ToggleButton(ID, PageID, [URL="http://redaktion.knx-user-forum.de/lexikon/GA/"]GA[/URL], StatusGA, [URL="http://redaktion.knx-user-forum.de/lexikon/ICON/"]ICON[/URL])
<...>
//SM - 110308: replaced [URL="http://redaktion.knx-user-forum.de/lexikon/GA/"]GA[/URL] into StatusGA
initga(StatusGA)
if pbutton(ID,PageID)==1 then {
   write(GA,!StatusGA)
} endif   
if StatusGA or after(systemstart(),1u64) then {
     pdisplay(ID,settime(),ICON,ACTIVE,GREEN,PageID) 
}endif

if StatusGA or after(systemstart(),1u64) then {
     pdisplay(ID,settime(),ICON,INACTIVE,GREY,PageID) 
} endif
:end