Thank you Jeff
i guess beautify.app works with the table home(1)+"wizards\fdkeywrd.dbf".
i received recently a message "table have no index". is that original or something have trouble this?
opening exlusive this table i see there is no index on token field.i index on "token" (fdkeywrd.cdx) and re run , the message disappears and _beautify seems to run as well.

i applied the link instruction you pointed but it seems not usefull, i added these directive before text/endtext as:

clea all
local m.myvar
*# beautify keyword_nochange
text to m.myvar pretext 1+2+3+8 noshow
R0lGODlhMAAqAHD9ACH/C05FVFNDQVBFMi4wAwEAAAAh+QQFCgD9ACwAAAAAMAAqAIcAAAAAADMAAGYAAJkAAMwAAP8AKwAAKzMAK2YAK5kAK8wAK/8AVQAAVTMAVWYAVZkAVcwAVf8AgAAAgDMAgGYAgJkAgMwAgP8AqgAAqjMAqmYAqpkAqswAqv8A1QAA1TMA1WYA1ZkA1cwA1f8A/wAA/zMA/2YA/5kA/8wA//8zAAAzADMzAGYzAJkzAMwzAP8zKwAzKzMzK2YzK5kzK8wzK/8zVQAzVTMzVWYzVZkzVcwzVf8zgAAzgDMzgGYzgJkzgMwzgP8zqgAzqjMzqmYzqpkzqswzqv8z1QAz1TMz1WYz1Zkz1cwz1f8z/wAz/zMz/2Yz/5kz/8wz//9mAABmADNmAGZmAJlmAMxmAP9mKwBmKzNmK2ZmK5lmK8xmK/9mVQBmVTNmVWZmVZlmVcxmVf9mgABmgDNmgGZmgJlmgMxmgP9mqgBmqjNmqmZmqplmqsxmqv9m1QBm1TNm1WZm1Zlm1cxm1f9m/wBm/zNm/2Zm/5lm/8xm//+ZAACZADOZAGaZAJmZAMyZAP+ZKwCZKzOZK2aZK5mZK8yZK/+ZVQCZVTOZVWaZVZmZVcyZVf+ZgACZgDOZgGaZgJmZgMyZgP+ZqgCZqjOZqmaZqpmZqsyZqv+Z1QCZ1TOZ1WaZ1ZmZ1cyZ1f+Z/wCZ/zOZ/2aZ/5mZ/8yZ///MAADMADPMAGbMAJnMAMzMAP/MKwDMKzPMK2bMK5nMK8zMK//MVQDMVTPMVWbMVZnMVczMVf/MgADMgDPMgGbMgJnMgMzMgP/MqgDMqjPMqmbMqpnMqszMqv/M1QDM1TPM1WbM1ZnM1czM1f/M/wDM/zPM/2bM/5nM/8zM////AAD/ADP/AGb/AJn/AMz/AP//KwD/KzP/K2b/K5n/K8z/K///VQD/VTP/VWb/VZn/Vcz/Vf//gAD/gDP/gGb/gJn/gMz/gP//qgD/qjP/qmb/qpn/qsz/qv//1QD/1TP/1Wb/1Zn/1cz/1f///wD//zP//2b//5n//8z///8AAAAAAAAAAAAAAAAI/wABCBxIsKDBgwgTKlzIsKHDhxAZqohIcSGMXbUWbZlYkaGWRbV2bSmoIiOtkIsUrehIMkzIWrUU1QJDchetXYtOLsIIgyWMnbVogZRZK4ZBnDFNJi0asSRMoTAVYdR1MCjInBlh6sr4cOciXVehZj3okmjKpFhr9VQI4ynMnDiF6kS4blcwXcHs6tW7LkzCLUGzyrz6dpcBhJHWAbOrbtdiYHeDBet78CKtSLUghbypSNcuqYsU5l2H126wcnkbA+sLZouNLWHCrJM8Oxhk2pInG024CPIu0qQj6w2mbvLk1bvw4kWt3PFvvwslqc5LvW4wcnntlsZ7Ou/i7r/tOv+crF2x8+/Ywxd3ft175NUQf3/n+9v9Isl6G+O3jpqi3XLAABjZcpOF0Zh+qZ03W0Va5DYcagPep1eA81m3W0Sz6QLgLsUR+FsMHVrHmHONUSQbddRN6FgwWogI2Yb46YZhZNjpAtxoz9mGmnanPbYiRBJSB6GKkIWRHmTpCdkddAwtolhwHd4VnHW1SGajaditF9k6aymU2HCLxJDYkNQp56Jd6ywCQyQ8rjNSQpLM9lh/AkVyoGM7esfhZDQJNBtqtV2IUAy8KDYZRwCo4KCVOuJHUAw3dulQnMFEUhCHeIJXIkG03dCRlG8ORN6AeRXk5GIsyRkMkwBA+l13BUWOIlxHTvLVF0dY2hZaq/f9KWNEN0TSm4BoUibiOgAkht93nkUiqUMwdEfqZABkuM4lKsyGaXsLUqSCMMFcsosw62RoWxiLrAfGfXjNtg6bkgQjDEsEiREJOwHuAsZoMLi7Kr0MxUCpbHhtMVuoADPU71eS3ZcwRe7i9TBFMUy2TgATUxQaqxlDK0nHIDsUEAA7
ENDTEXT
*#beautify
messagebox(m.myvar)

with _screen
try
.addobject("img","image")
catch
endtry
.img.pictureval=strconv(m.myvar,14)  &&image is effectively built in _screen
.img.visible=.T.
endwith

this block is not overide and the error appears as well when beautify ("API call provoked exception"). can test the code above.
in the beautify dialog there is "no modification" option in keyword and symbol(see the attached)