the verbs for your bed object, have no message (you just forgot to type in a message for them), so you need to add in their values by typing in the messages that you want it to say.
slap doesn't work, because you accidentally have a space after slap [ slap(space) ] in the pattern box, so delete the space at the end of slap.
I fixed up your game code, so here it is:
(I added in some stuff, which you can change of course, so you can see what you needed)
(If you don't know what to do with this, just ask, and I can help you)
<asl version="530">
<include ref="English.aslx" />
<include ref="Core.aslx" />
<game name="Dungeon Escape">
<gameid>83daade6-c223-49c6-9714-dbdc4a043c2f</gameid>
<version>1.0</version>
<firstpublished>2013</firstpublished>
<category>Mystery</category>
<difficulty>Medium</difficulty>
<cruelty>Merciful</cruelty>
</game>
<object name="prison cell">
<inherit name="editor_room" />
<descprefix>You are in</descprefix>
<description>You find yourself in a dark prison cell, illuminated by the torches that line the ancient dungeon walls. The cell is empty except for an old, rotting bed and a wooden bucket.</description>
<object name="player">
<inherit name="editor_object" />
<inherit name="editor_player" />
<hit>Stop hitting yourself.</hit>
<speak>You have nothing to say to yourself.</speak>
<smell>You need a shower.</smell>
<pov_look>Your hair is dirty and your clothes are torn.</pov_look>
<kick>Somehow you manage to kick yourself. Well done.</kick>
<slap>You slap some sense into yourself.</slap>
<hug>You give yourself a nice, big hug.</hug>
</object>
<exit name="Cell door" alias="south" to="Cell block">
<inherit name="southdirection" />
<locked />
<lockmessage>The door won't budge, its lock is completely rusted over.</lockmessage>
</exit>
<object name="bucket01">
<inherit name="editor_object" />
<alias>bucket</alias>
<look>A wooden bucket.</look>
<take />
<takemsg>You pick up the bucket.</takemsg>
<drop type="boolean">false</drop>
<kick>You kicked the bucket. Literally.</kick>
</object>
<object name="old rotting bed">
<inherit name="editor_object" />
<inherit name="surface" />
<alias>bed</alias>
<look>The straw bed is musty and covered in a tattered blanket. Sleeping on this would be next to impossible.</look>
<hidechildren type="boolean">false</hidechildren>
<listchildren />
<listchildrenprefix>Lying on the bed is</listchildrenprefix>
<hit>You hit the old rotting bed, breaking it into pieces, but it magically returns to normal.</hit>
<speak>You can't speak to a bed, silly!</speak>
<touch>You don't want to touch the yucky bed!</touch>
<smell>It smells foul!</smell>
<lick>Eww, no way!</lick>
<displayverbs>Look at; Take</displayverbs>
<takemsg>You can't carry a bed!</takemsg>
<sit>You would rather not!</sit>
<lie>Um, no! Eww!</lie>
<object name="crowbar">
<inherit name="editor_object" />
<look>A useful crowbar. Good for opening things and killing alien creatures.</look>
<take />
<takemsg>You pick up the crowbar. Now all you need is a pair of glasses and an HEV suit.</takemsg>
<kill>you scream, in a flurry of strikes, the heavy metal crowbar smashes down on the alien, closing your eyes, not wanting to see the bloody mess you are making. Needless to say, the alien is very dead!</kill>
</object>
</object>
</object>
<object name="Cell block">
<inherit name="editor_room" />
</object>
<verb>
<property>kick</property>
<pattern>kick</pattern>
<defaultexpression>"You can't kick " + object.article +"."</defaultexpression>
</verb>
<verb>
<property>slap</property>
<pattern>slap</pattern>
<defaultexpression>"You can't slap " + object.article +"."</defaultexpression>
</verb>
<verb>
<property>hug</property>
<pattern>hug</pattern>
<defaultexpression>"You can't hug " + object.article +"."</defaultexpression>
</verb>
</asl>
and here's your own original game code, so you can compare my fixes to what you had:
<asl version="530">
<include ref="English.aslx" />
<include ref="Core.aslx" />
<game name="Dungeon Escape">
<gameid>83daade6-c223-49c6-9714-dbdc4a043c2f</gameid>
<version>1.0</version>
<firstpublished>2013</firstpublished>
<category>Mystery</category>
<difficulty>Medium</difficulty>
<cruelty>Merciful</cruelty>
</game>
<object name="prison cell">
<inherit name="editor_room" />
<descprefix>You are in</descprefix>
<description>You find yourself in a dark prison cell, illuminated by the torches that line the ancient dungeon walls. The cell is empty except for an old, rotting bed and a wooden bucket. </description>
<object name="player">
<inherit name="editor_object" />
<inherit name="editor_player" />
<hit>Stop hitting yourself.</hit>
<speak>You have nothing to say to yourself.</speak>
<smell>You need a shower.</smell>
<look type="string"></look>
<pov_look>Your hair is dirty and your clothes are torn.</pov_look>
<kick>Somehow you manage to kick yourself. Well done. </kick>
<slap>You slap some sense into yourself. </slap>
<hug>You give yourself a nice, big hug.</hug>
</object>
<exit name="Cell door" alias="south" to="Cell block">
<inherit name="southdirection" />
<locked />
<lockmessage>The door won't budge, its lock is completely rusted over. </lockmessage>
</exit>
<object name="bucket01">
<inherit name="editor_object" />
<alias>bucket</alias>
<look>A wooden bucket.</look>
<take />
<takemsg>You pick up the bucket.</takemsg>
<drop type="boolean">false</drop>
<kick>You kicked the bucket. Literally. </kick>
</object>
<object name="old rotting bed">
<inherit name="editor_object" />
<inherit name="surface" />
<alias>bed</alias>
<look>The straw bed is musty and covered in a tattered blanket. Sleeping on this would be next to impossible. </look>
<hidechildren type="boolean">false</hidechildren>
<listchildren />
<listchildrenprefix>Lying on the bed is </listchildrenprefix>
<hit type="string"></hit>
<speak type="string"></speak>
<touch type="string"></touch>
<smell type="string"></smell>
<lick type="string"></lick>
<displayverbs>Look at; Take</displayverbs>
<takemsg>You can't carry a bed! </takemsg>
<sit type="string"></sit>
<lie type="string"></lie>
<object name="crowbar">
<inherit name="editor_object" />
<look>A useful crowbar. Good for opening things and killing alien creatures. </look>
<take />
<takemsg>You pick up the crowbar. Now all you need is a pair of glasses and an HEV suit. </takemsg>
</object>
</object>
</object>
<object name="Cell block">
<inherit name="editor_room" />
</object>
<verb>
<property>kick</property>
<pattern>kick</pattern>
<defaultexpression>"You can't kick " + object.article + "."</defaultexpression>
</verb>
<verb>
<property>slap</property>
<pattern>slap </pattern>
<defaultexpression>"You can't slap " + object.article + "."</defaultexpression>
</verb>
<verb>
<property>hug</property>
<pattern>hug</pattern>
<defaultexpression>"You can't hug " + object.article + "."</defaultexpression>
</verb>
</asl>