Hello everyone, I had that really nasty Austria Pitstop Bug too and couldn't proceed in my career mode, it pissed me up and so I looked for myself for a solution and I found it relatively fast, here it is:
Go to: YOURGAMEFOLDER\Tracks\circuits\austria\
Open the file: Pitstops.xml with your wordpad and then delete the content, after deleting insert this instead:
<?xml version="1.0" encoding="UTF-8"?>
<placements name="Pitstops">
<instance name="PitStop1_Template" pitstop_id="pitstop_1" index="1" scene1="PitstopScene1" scene2="PitstopScene2" scene3="PitstopScene3" mirrored="true" transform="0.9621389, 0, -0.2680592, 0, 0, 1, 0, 0, 0.2680592, 0, 0.9621389, 0, 414.317474, -42.61194, 153.713287, 1" />
<instance name="PitStop2_Template" pitstop_id="pitstop_2" index="2" scene1="PitstopScene1" scene2="PitstopScene2" scene3="PitstopScene3" mirrored="true" transform="0.9621389, 0, -0.272559643, 0, 0, 1, 0, 0, 0.272559643, 0, 0.9621389, 0, 379.9856, -42.61194, 163.496445, 1" />
<instance name="PitStop3_Template" pitstop_id="pitstop_3" index="3" scene1="PitstopScene1" scene2="PitstopScene2" scene3="PitstopScene3" mirrored="true" transform="0.9621389, 0, -0.272559643, 0, 0, 1, 0, 0, 0.272559643, 0, 0.9621389, 0, 366.444244, -42.61194, 167.344955, 1" />
<instance name="PitStop4_Template" pitstop_id="pitstop_4" index="4" scene1="PitstopScene1" scene2="PitstopScene2" scene3="PitstopScene3" mirrored="true" transform="0.9621389, 0, -0.2680592, 0, 0, 1, 0, 0, 0.2680592, 0, 0.9621389, 0, 352.944244, -42.61194, 171.17041, 1" />
<instance name="PitStop5_Template" pitstop_id="pitstop_5" index="5" scene1="PitstopScene1" scene2="PitstopScene2" scene3="PitstopScene3" mirrored="true" transform="0.9621389, 0, -0.2680592, 0, 0, 1, 0, 0, 0.2680592, 0, 0.9621389, 0, 338.9623, -42.61194, 175.136734, 1" />
<instance name="PitStop6_Template" pitstop_id="pitstop_6" index="6" scene1="PitstopScene1" scene2="PitstopScene2" scene3="PitstopScene3" mirrored="true" transform="0.9621389, 0, -0.2680592, 0, 0, 1, 0, 0, 0.2680592, 0, 0.9621389, 0, 325.417725, -42.61194, 178.992126, 1" />
<instance name="PitStop7_Template" pitstop_id="pitstop_7" index="7" scene1="PitstopScene1" scene2="PitstopScene2" scene3="PitstopScene3" mirrored="true" transform="0.9621389, 0, -0.2680592, 0, 0, 1, 0, 0, 0.2680592, 0, 0.9621389, 0, 311.87207, -42.61194, 182.845612, 1" />
<instance name="PitStop8_Template" pitstop_id="pitstop_8" index="8" scene1="PitstopScene1" scene2="PitstopScene2" scene3="PitstopScene3" mirrored="true" transform="0.9621389, 0, -0.2680592, 0, 0, 1, 0, 0, 0.2680592, 0, 0.9621389, 0, 291.526031, -42.61194, 188.633057, 1" />
<instance name="PitStop9_Template" pitstop_id="pitstop_9" index="9" scene1="PitstopScene1" scene2="PitstopScene2" scene3="PitstopScene3" mirrored="true" transform="0.9621389, 0, -0.2680592, 0, 0, 1, 0, 0, 0.2680592, 0, 0.9621389, 0, 277.584045, -42.61194, 192.597748, 1" />
<instance name="PitStop10_Template" pitstop_id="pitstop_10" index="10" scene1="PitstopScene1" scene2="PitstopScene2" scene3="PitstopScene3" mirrored="true" transform="0.9621389, 0, -0.2680592, 0, 0, 1, 0, 0, 0.2680592, 0, 0.9621389, 0, 264.013336, -42.61194, 196.447388, 1" />
<instance name="PitStop11_Template" pitstop_id="pitstop_11" index="11" scene1="PitstopScene1" scene2="PitstopScene2" scene3="PitstopScene3" mirrored="true" transform="0.9621389, 0, -0.2680592, 0, 0, 1, 0, 0, 0.2680592, 0, 0.9621389, 0, 250.461411, -42.61194, 200.310287, 1" />
<instance name="PitStop12_Template" pitstop_id="pitstop_12" index="12" scene1="PitstopScene1" scene2="PitstopScene2" scene3="PitstopScene3" mirrored="true" transform="0.9621389, 0, -0.2680592, 0, 0, 1, 0, 0, 0.2680592, 0, 0.9621389, 0, 236.8894, -42.61194, 204.170624, 1" />
<instance name="PitStop0_Template" pitstop_id="pitstop_0" index="0" scene1="PitstopScene1" scene2="PitstopScene2" scene3="PitstopScene3" mirrored="true" transform="0.9621389, 0, -0.278760165, 0, 0, 1, 0, 0, 0.278760165, 0, 0.9621389, 0, 427.8178, -42.6109238, 149.91748, 1" />
</placements>
Sorry I couldn't upload the XML File here nor could I upload an .RAR file so you need to do it manually.