cannot see the image or image thumbnail

Project:phpAlbum.net
Version:0.4.1-16
Component:Miscellaneous
Category:bug
Priority:normal
Assigned:Unassigned
Status:new
Description

after scan the photo dirs this is what i get in logs, all files present so not sure why getting this not found function error?

[Mon Nov 12 14:33:33 2012] SOMEIP:59929 [200]: /main.php?cmd=themeimage&v
ar1=shdw_r.png&var2=cceeff&var3=75 - Call to undefined function imagecreatetruec
olor() in C:\web\themes\engines\phptemplate\engine.php on line 190
[Mon Nov 12 14:33:33 2012] SOMEIP:59930 [200]: /main.php?cmd=themeimage&v
ar1=shdw_d.png&var2=cceeff&var3=75 - Call to undefined function imagecreatetruec
olor() in C:\web\themes\engines\phptemplate\engine.php on line 190