Strange timinig constraints error + Possible BUG in Quartus II 14.1.1

Hi After compiling the project with Quartus II. These timing constraint errors have been displayed:

Slack From To Recommendations

1 -0.441 SENSOR_TOP:\GEN_P...han3~62_OTERM597 SENSOR_TOP:\GEN_P...han3~62_OTERM597 Report recommendations for this path

2 -0.364 SENSOR_TOP:\GEN_P...han3~62_OTERM597 SENSOR_TOP:\GEN_P...han3~62_OTERM597 Report recommendations for this path

3 -0.359 SENSOR_TOP:\GEN_P...han3~62_OTERM597 SENSOR_TOP:\GEN_P...han3~62_OTERM597 Report recommendations for this path

4 -0.339 SENSOR_TOP:\GEN_P...han3~62_OTERM597 SENSOR_TOP:\GEN_P...han3~62_OTERM597 Report recommendations for this path

5 -0.262 SENSOR_TOP:\GEN_P...han3~62_OTERM597 SENSOR_TOP:\GEN_P...han3~62_OTERM597 Report recommendations for this path

Then when I click into "Report recommendations for this path" to analyze this error with time quest analyzer, the time quest analyzer gives me another error and it is closed automatically. Is this a bug of the program?? Find attached the screenshot of the exception.

Thanks anyway!!!http://www.alteraforum.com/forum/attachment.php?attachmentid=10132&stc=1