changing image galleries in a tour

I am a new user and pretty new to XML, so please bear with me. I am creating a tour based on the "tour" example provided with krpano. I also want to add the image gallery plugin, but would like to have different images display with each "location". The problem I am having is that in the master XML file, called "tour", the loadpano command seems to require that I use either KEEPALL, KEEPBASE, or KEEPPLUGINS in order for it to load the first pano. Like this:
<action name="load1">
loadpano(1.xml,null,KEEPALL,BLEND(2));
</action>
If I use any other flag, such as MERGE, it gives me errors and wont load. So I can put my image gallery code on the XML of the second location, and use MERGE in the load2 action, which works fine. But when I leave location 2 and come back to 1, the image gallery from 2 is still present.

I figured I could work around this by duplicating the first location and then setting the hotspots to bounce between locs 2 and 3, but this seems needlessly cumbersome.

Any ideas what I need to do differently?

What I am using is the code from the "image gallery" example provided with krPano. Maybe this is not actually a plugin, in that it is not referring to an external file.

Here is my entire code for the "master" XML file:
<krpano version="1.0.6" onstart="action(load1);">
<include url="plugins.xml" />

<display details="32" movequality="LOW" stillquality="HIGH" />

<view hlookat="0"
vlookat="0"
fov="85" fovmin="50" fovmax="110"
fisheye="0.40" fisheyefovlink=".5" limitfov="true"
/>

<!-- change the default textstyle for showtext: -->
<textstyle name="DEFAULT"
font="Arial" fontsize="14"
border="false" background="false"
textcolor="0xFFFFFF"
effect="glow(0x000000,0.7,4,2);dropshadow(4,45,0x000000,4,1);"
/>

<textstyle name="smalltext"
font="Arial" fontsize="10"
border="false" background="false"
textcolor="0xFFFFFF"
effect="glow(0x000000,0.7,4,2);dropshadow(2,45,0x000000,3,1);"
/>

<!-- actions -->

<action name="startloading">
set(hotspot.visible,false);
push(view.fovmin);
set(view.fovmin,1);
</action>

<action name="loadingdone">
pop(view.fovmin);
set(hotspot.visible,true);
</action>

<action name="lookinterrupt">
action(loadingdone);
breakall();
</action>

<action name="load1">
loadpano(1.xml,null,KEEPALL,BLEND(2));
</action>

<action name="load2">
loadpano(2.xml,null,KEEPBASE,BLEND(2));
</action>

<action name="load3">
loadpano(goleft.xml,null,KEEPBASE,BLEND(2));
</action>

<action name="fadein">
set(plugin[%1].visible,true);
tween(plugin[%1].alpha,1,0.5);
</action>

<action name="fadeout">
tween(plugin[%1].alpha,0,0.5,easeoutquad,set(plugin[%1].visible,false));
</action>

<plugin name="btn1" url="images/button1.png" align="bottomcenter" y="15" x="-75" width="50" height="50" onover="action(fadein,img1);" onout="action(fadeout,img1);" />
<plugin name="btn2" url="images/button2.png" align="bottomcenter" y="15" x="-25" width="50" height="50" onover="action(fadein,img2);" onout="action(fadeout,img2);" />
<plugin name="btn3" url="images/button3.png" align="bottomcenter" y="15" x="+25" width="50" height="50" onover="action(fadein,img3);" onout="action(fadeout,img3);" />
<plugin name="btn4" url="images/button4.png" align="bottomcenter" y="15" x="+75" width="50" height="50" onover="action(fadein,img4);" onout="action(fadeout,img4);" />

<plugin name="img1" url="images/image1.jpg" align="center" alpha="0" visible="false" />
<plugin name="img2" url="images/image2.jpg" align="center" alpha="0" visible="false" />
<plugin name="img3" url="images/image3.jpg" align="center" alpha="0" visible="false" />
<plugin name="img4" url="images/image4.jpg" align="center" alpha="0" visible="false" />

</krpano>

The error I get when use MERGE in "load1" caome up in a box that says "An Actionscript error has occurred" and then:
ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller.
at flash.display::DisplayObjectContainer/removeChild()
at krpano::krpano_plugin/destroy()
at krpano::krpano_base/removeplugin()
at kflashpano::Kpano/remove_not_keeped_objects()
at kflashpano::Kpano/loadpano()
at kflashpano::Kactionqueue/call_action_loadpano()
at kflashpano::Kactionqueue/process_actions()
at kflashpano::Kactionqueue/parse_action()
at kflashpano::Kactionqueue/callaction()
at kflashpano::Kpano/startviewing()
at kflashpano::Kpano/xmlloaddone()
at kflashpano::Kxml/loading_xml_finished()
at kflashpano::Kxml/load_xml_includes()
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at flash.net::URLLoader/onComplete()

Over the weekend, I was wondering if it would just work better to create three separate tours with "loadpano" actions on the hotspots. It looks like I could use MERGE with that action as well.

Thanks for your help!