I took a look, and the first several pages of the file are all the same error: Unable to open file $FILTER/ota/inverter/inverter.cal/inverter.pex.netlist
Does the file exist at that location? Are the permissions set such that the tool can read it? Is it possibly in use by another program, preventing the system from accessing it?
If the files are not readable, the errors are just going to keep cascading.