MSP430FR5994: Bootstrap Loader (BSL) [ACK_ERROR_MESSAGE]Unknown ACK Value!

I'm trying to use the MSP430BSL. This is my script:

MODE FRxx UART 115200 COM13
VERBOSE
MASS_ERASE
RX_PASSWORD
RX_DATA_BLOCK Trailblazer.txt
TX_BSL_VERSION

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But when I try to run it on the command line (shown below) i keep getting the [ACK_ERROR_MESSAGE]Unknown ACK Value. 

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C:\Users\wng\Documents\WNG SW Development\Flasgh from RS422 UART\Bootloader>BSL_Scripter.exe script.txt
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BSL Scripter 3.2.1
PC software for BSL programming
2024-May-01 15:47:49
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Input file script is : C:/Users/wng/Documents/WNG SW Development/Flasgh from RS422 UART/Bootloader/script.txt
MODE FRxx UART 115200 COM13
VERBOSE
Verbose mode is now on!
MASS_ERASE
[80] [01] [00] [15] [64] [a3]
<00>
[ACK_ERROR_MESSAGE]Unknown ACK value!
RX_PASSWORD
[80] [21] [00] [11] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff]
[ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff]
[ff] [ff] [ff] [ff] [9e] [e6]
<00>
[ACK_ERROR_MESSAGE]Unknown ACK value!
RX_DATA_BLOCK Trailblazer.txt
Read Txt File : C:\Users\wng\Documents\WNG SW Development\Flasgh from RS422 UART\Bootloader\Trailblazer.txt
[80] [04] [01] [10] [00] [31] [00] [4f] [14] [b1] [00] [04] [00] [b0] [13] [74]
[70] [81] [4c] [00] [00] [81] [4d] [02] [00] [40] [18] [92] [52] [c0] [8f] [92]
[01] [f2] [f0] [7f] [00] [83] [13] [d2] [c3] [84] [13] [5f] [42] [83] [13] [45]
[19] [0f] [10] [1f] [f3] [1f] [93] [b0] [20] [1c] [43] [3d] [40] [40] [00] [b0]
[13] [54] [84] [f2] [d0] [20] [00] [3b] [00] [00] [3c] [00] [3c] [00] [3c] [03]
[43] [f2] [f0] [df] [00] [3b] [00] [5f] [42] [29] [00] [1f] [f3] [1f] [93] [09]
[20] [3f] [40] [ef] [00] [5f] [f2] [a4] [13] [7f] [d0] [10] [00] [c2] [4f] [a4]
[13] [08] [3c] [3f] [40] [ef] [00] [5f] [f2] [a4] [13] [7f] [d0] [10] [00] [c2]
[4f] [a4] [13] [5f] [42] [29] [00] [3f] [f0] [40] [00] [3f] [90] [40] [00] [09]
[20] [3f] [40] [df] [00] [5f] [f2] [a4] [13] [7f] [d0] [20] [00] [c2] [4f] [a4]
[13] [08] [3c] [3f] [40] [df] [00] [5f] [f2] [a4] [13] [7f] [d0] [20] [00] [c2]
[4f] [a4] [13] [40] [18] [92] [92] [76] [11] [dc] [8f] [1e] [28] [05] [20] [40]
[18] [92] [92] [74] [11] [da] [8f] [18] [28] [1c] [42] [4e] [13] [1d] [42] [50]
[13] [1e] [42] [1c] [11] [1f] [42] [1e] [11] [b0] [13] [18] [89] [0c] [93] [3c]
[34] [1c] [43] [3d] [40] [40] [00] [b0] [13] [54] [84] [5f] [42] [84] [13] [5f]
[c3] [5f] [d3] [c2] [4f] [84] [13] [30] [3c] [40] [18] [92] [92] [76] [11] [dc]
[8f] [06] [28] [2a] [20] [40] [18] [8a] [26]
<00>
[ACK_ERROR_MESSAGE]Unknown ACK value!
Time elapsed of writing 256 bytes : 0.09371 seconds
Speed of writing data :2.668(kB/s)
TX_BSL_VERSION
[80] [01] [00] [19] [e8] [62]
<00>
[ACK_ERROR_MESSAGE]Unknown ACK value!

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how do i resolve these ACK error messages?