Keil C Fatal error: C3906U: Malformed via file

*** Using Compiler 'V5.06 update 4 (build 422)', folder: 'C:\Keil_v5\ARM\ARMCC\Bin'
Build target 'STM32F429I-Discovery USB'
compiling stm32f4xx_rcc.c...
Fatal error: C3906U: Malformed via file '.\targets\stm32f429_discovery\stm32f4xx_rcc.__i'.
compiling misc.c...
Fatal error: C3906U: Malformed via file '.\targets\stm32f429_discovery\misc.__i'.
assembling startup_stm32f429_439xx.s...
startup_stm32f429_439xx.s: error: A3906U: Malformed via file '.\targets\stm32f429_discovery\startup_stm32f429_439xx._ia'.
compiling stm32f4xx_gpio.c...
Fatal error: C3906U: Malformed via file '.\targets\stm32f429_discovery\stm32f4xx_gpio.__i'.
compiling tm_stm32f4_disco.c...
Fatal error: C3906U: Malformed via file '.\targets\stm32f429_discovery\tm_stm32f4_disco.__i'.
compiling tm_stm32f4_delay.c...
Fatal error: C3906U: Malformed via file '.\targets\stm32f429_discovery\tm_stm32f4_delay.__i'.
compiling main.c...
Fatal error: C3906U: Malformed via file '.\targets\stm32f429_discovery\main.__i'.
compiling tm_stm32f4_gpio.c...
Fatal error: C3906U: Malformed via file '.\targets\stm32f429_discovery\tm_stm32f4_gpio.__i'.
compiling stm32f4xx_it.c...
Fatal error: C3906U: Malformed via file '.\targets\stm32f429_discovery\stm32f4xx_it.__i'.
compiling system_stm32f4xx.c...
Fatal error: C3906U: Malformed via file '.\targets\stm32f429_discovery\system_stm32f4xx.__i'.
".\Targets\STM32F429_Discovery\project.axf" - 1 Error(s), 0 Warning(s).
Target not created.
Build Time Elapsed:  00:00:02