[TYPO3-english] Could not analyse class:Tx_Vhs_ViewHelpers_Extension_Path_ResourcesViewHelper maybe not loaded or no

[TSniper]

Hello,

i tried to create an extension with builder, and when i include their static template, this messafe show up :

Could not analyse class:Tx_Vhs_ViewHelpers_Extension_Path_ResourcesViewHelper maybe not loaded or no autoloader?

what could it be, the namespace is writen like this :
<div xmlns="http://www.w3.org/1999/xhtml" lang="en"
	xmlns:f="http://typo3.org/ns/TYPO3/Fluid/ViewHelpers"
	xmlns:v="http://typo3.org/ns/FluidTYPO3/Vhs/ViewHelpers"
	xmlns:flux="http://typo3.org/ns/FluidTYPO3/Flux/ViewHelpers">


thanks in advance