gbm error

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Darrin, what version of R are you using have the same question.  I have been
using the gbm package without problem with R 2.7.1. but I recently switched
computers and downloaded 2.7.2.  I used the following code, which works fine
on my old computer with 2.7.1 but I get an error with the new version.
fin.tc5.lr01 <- gbm.step(data=fin, 
+     gbm.x = 7:14,
+     gbm.y = 24,
+     family = "bernoulli",
+     tree.complexity = 5,
+     learning.rate = 0.01,
+     bag.fraction = 0.5)
Error: could not find function "gbm.step"
Good afternoon

Has anyone tried using Dr. Elith's BRT script?  I cannot seem to run
gbm.step  from the installed gbm package.  Is it something external to
gbm?

When I run the script itself

<- gbm.step(data=model.data, 

    gbm.x = colx:coly,

    gbm.y = colz,

    family = "bernoulli",

    tree.complexity = 5,

    learning.rate = 0.01,

    bag.fraction = 0.5)

... I keep encountering the same error:

ERROR:  
  unexpected ')' in "bag.fraction = 0.5)"

I've tried all sorts of variations (such as)

sep22BRT.lr01 <- gbm{data=sep22BRT, 
gbm.x = sep22BRT[,3:42], 
gbm.y = sep22BRT[,1], 
family = "bernoulli", 
tree.complexity = 5, 
learning.rate = 0.01, 
bag.fraction = 0.5}

and cannot find the problem. 

Is there a glaring error that I am overlooking? 

Darin Brooks
Geomatics/GIS/Remote Sensing Coordinator
Kim Forest Management Ltd. Cranbrook Office
Cranbrook, BC

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