Always accept the results of load() into a structure so that you don't poof variables into existence and cause problems like you did.
storedStructure = load(fullFileName);
var1 = storedStructure.var1;
var2 = storedStructure.var2;
For example if there was a var3 in there, it's not going to blast over any var3 that I already have because I didn't explicitly allow it.