[news.eclipse.technology.laszlo] preview

[caonabot@xxxxxxxxx (Caonabo)]

If there is FAQ section for beginner.
I'm new to Eclipse.
I'm having problem with the preview in the ideforlaszlo

My setup:
j2sdk 1.42
openlaszlo 3.31
eclipse sdk 3.1
laszloIDE 0.2.0 -jdk1.4
wtp all in one sdk r-1.5.0 200606281455
Win XP SP2


This is the only info with regard to that: 
"Cannot preview? If the current state of the Document in the editor 
contains errors, there will be no Preview available. Go back to the Source 
Page and verify if there are errors (saving the file will force a build 
depending on your Eclipse preferences). Another reason could be that the 
document is not meant to be compiled into a previewable artifact, for 
example, an LZX library file. Also, the preview page is not available for 
read-only files such as the system file "basebutton.lzx"."

the sample that I try is

<canvas>
   <text>Hello World!</text>
</canvas>


but there is not view.

Thank you for you help.