IDA Pro noob here. I hit a wrong key while trying it out and now some of the lines that looked like
lea ecx, [esp+150h+var_13E+2]
now look something like
lea ecx, [esp+14h]
It computed the sum of the formula to figure out the stack address, removing the stack variable name it was using. It's harder to use now. Is there a way to get back the original line?
You can use K to toggle between stackvar and numerical representations.
If none of the solutions already provided work then it could be because the stack variable information itself was lost. You can have IDA regenerate it by undefining your function and redefining it.
To do, so, place your text cursor at the beginning of the function, press U (Undefine), then P (define Procedure).
Note that this will cause IDA to lose any information you manually added to the function (stack variable names, function prototype, etc.), so only do it as a last-resort.
