WillA

animatrix_
You can do the same without connecting the meta node to attribwrangle node. You just have to add a spare parm pointing to the meta node and then using -1 for the detail function call:

detail ( -1, "iteration" )

when using an attributewrangle inside a foreach looop, you need to connect the "metadata" foreach node
(that extra foreach node that contains the iteration value)
and you need to connect that node to the second input of the attributewrangle

int thisptnum = detail(1,"value",0);
int thisvalue = thisptnum * 10;
vector thispoint = point("../line","P",thisptnum);

setpointattrib(geoself(), "n2", thisptnum, thisvalue, "set");

printf(" P=%f ptnum=%d value=%d\n",thispoint,thisptnum,thisvalue);

zoeyyyyyyyy2018
Try to add this environment variable to your 'houdini.env' file:
HOUDINI_USE_HFS_OCL=0