Deadline Redshift expression error

Hello! When rendering with expression in file prefix in node, expressions like ‘chs(…)’ or ‘ch(…)’ are not evaluated correcttly

which leads to the creation of the folder …\ch( and it cause an error:

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Error
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Error:       Unable to evaluate expression (Syntax error - extra tokens detected in expression (/out/sh02_dog/RS_outputFileNamePrefix)).
   at Deadline.Plugins.PluginWrapper.RenderTasks(String taskId, Int32 startFrame, Int32 endFrame, String& outMessage, AbortLevel& abortLevel)

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Type
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RenderPluginException

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Stack Trace
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   at Deadline.Plugins.SandboxedPlugin.d(DeadlineMessage bas)
   at Deadline.Plugins.SandboxedPlugin.RenderTask(String taskId, Int32 startFrame, Int32 endFrame)
   at Deadline.Slaves.SlaveRenderThread.c(TaskLogWriter adz)

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Log

Client and submitters downloaded yesterday, so i guess its a latest version.
H17.5.258 (and 360), Redshift 2.6.42 (and 2.6.48)